Come off it..
Most believers do not accept the claims of any old Tom, Dick or Harry. Why would they? We are not all stupid, you know.
No, they assume specific claims of Toms, Dicks, or Muhammads. You reject the Baha'i texts and the Mormon Bible, yet many do assume these texts are valid and true. You have used this same justification yourself (the logical fallacy of argument by popularity) so you should aply it to things you don't believe in. If the Quran is true, then so is the Gita, the Urantia book, the Mormon Bible, and how Christians interpret the Bible. If one is true because it is believed in, then all ae true because they are believed in. The Mormons are as correct as Muslims, right? Just because Mormons think they are right donesn't mean Muslims are wrong. And just because you think Islam is correct, and the Quran a divine source doesn't mean the Mormon Bible isn't divine and Mormons wrong, right? Your personal belief doesn't imply other theists are wrong.
Many "fundamentalists" do not have a good formal education.
Stats show that the less educated are more likely to believe in irrational concepts, like religion. Fundamentalism is just a more extreme form of religion, with more commitment to the same ideas that mainstream believers believe. Believers are not one tribe, there are theists who aren't very committed to their beliefs, to moderates who are committed to ritual and belief, and then the fundamentalist believer who is quite adamant their beliefs are true like creationists, and then extremists who will act on their irrational beliefs in anti-social ways. We see more extremism in nations that have less secularism. Secular government helps maintain religious freedom but also limits extremism. It has to be this way since there are so many religions, and so many people who use their religious beliefs to impose their personal religious values onto society as a whole. We need to have debates that sort out irrational religious assumptions and beliefs aside. It's OK that people believe in religion, but they need to understand the subjectivity of their belief, and that theists share a world with other disagreeing believers, and also critical thinkers who subject all theists to criticism about religion. We are all in the same boat that we disagree with theists. Ateists just disagree with one more religion than any given theist.
If you enjoy these types of debate, then fine.
I personally lose interest quite quickly.
When? You have been defiant against many critics, and you will make claims over and over again and avoid the requests by critics for evidence and exlpanations. It must take you many months to lose interest in debates where you post comments every few hours a day.
I thank God that I had a good, broad education, and enjoy conversing with most people .. but Bible literalism, without academic knowledge often crosses a line .. a line that denies well established scientific fact. It's not for me !
My sense is you are having inner conflicts about who you think you are. Your behavior doesn't match your claims. You claim to lose interest quickly when clearly that isn't the case.
You are guilty of presuming that all believers are alike .. we are not. We are all unique human beings, with a story to tell.
I didn't claim "all believers are the same". But there are patterns that fits religious belief in a braod sense. And then there are patterns that fir certain types of believers. As I noted elsewhere there is a behavioral pattern of Abrahamic believers that Eastern theists don't do. Abrahamic believers treat their concepts as if factual and true, while Eastern theists treat their ideas as more representative of real phenomenon.
You cite being educated, well so are critical thinkers. I am personally educated in various discilines of psychology, including the pyschology of religion. I have learned why people become religious, and there is a biological and social component. Many individual believers who are committed to a tradition of belief will want to shape their belief to fit their own story and their own meaning. It's fine to have traditional and cultural meaning. Versonal meanin g is versonal, not objecdtive. When believers engage in religious debates, and try to argue for why their personal beliefs are objective, and imly their versonal beliefs are universal and absolute (even if these are not directly claimed, only implied) these will be opposed by asking for evidence. There is none. The believer who engages is caught in a trap between their personal meaning assignment and belief (of an absolute truth) to critical thinking that recognizes religions are not absolute, and critical thinkers asking for evidence.
Your behavior in these debates exposes your dilemma as a trapped believer, a person who thinks they have absolute knowledge but can't explain that it is true. You either don't want to acknowledge this, or are lost in denial about this. The freedom lies in accepting you have beliefs that are NOT absolute, not factual, and not rational, but you can't still feel they are true and significant to you personally. That critical thinkers are not convinced shouldn't be a problem for your personal belief.