You don't have to be an expert in biology or evolution to offer opinions about them, but if you're not an expert in the field, your opinion is not heard by those who are experts. It's not because they are being disagreed with that they aren't listening to creationists, for example. They're also not interested in the opinions of lay people who happen to agree with them. This is also the case with climate scientists. They're not surveying the public for opinions. Why would they? Why would the opinion of a lay person matter to experts whether it agreed with them or not?
But he is. So are many of the posters on this forum. Expertise in critical thought is common. Kalam cosmological argument, for example, is easily refuted. It contains a non sequitur between
3. “Therefore, the universe has a cause of its existence.” and 4. “If the universe has a cause of its existence, then an uncaused, personal Creator of the universe exists, who sans creation is beginningless, changeless, immaterial, timeless, spaceless, and enormously powerful and intelligent.”