I think the danger of dogmatic materialists is their desire to limit inquiry, interest and investigation into many paranormal/crypto/alien areas.
They will say there is nothing in those things that have shown themselves worthy yet. This is the danger of dogmatism in my opinion. Critical consideration secretly gets replaced by defense of a worldview. Fortunately though, a sizeable minority continue on with these subjects despite the ridicule.
I do believe there are dogmatic materialists that knee-jerk attack contrary evidence and they are a danger but only in slowing the speed of knowledge progression.
And what contrary evidence do you have? Keep in mind that the key aspect of evidence is that it be evident, meaning detectable, meaning physical. If you know something because you detected it, then you're using the same materialism that you decry here.
Thanks for everything you brave souls willing to believe just about anything without justification have contributed to the human condition. Paranormal and alien studies have enriched my life immensely, as has the belief by others in gods and astrology. I don't know what
crypto refers to here, but let's assume reptilians and Bigfoot (cryptozoics).
You people have sped the progression of knowledge despite those pesky scientists with their short-sighted materialism that gave you just about every idea that prolonged your life, made it healthier, made it safer, made it more comfortable, and allowed you to search the world's intellectual and entertainment resources in seconds.
But from the day dreamers, we have all these sterile ideas that do none of those things.