Why are Bitcoiners so toxic and so closed minded?

I'm in multiple Bitcoin groups, trying to promote debate and open the minds of people to new ideas and new perspectives. However one thing in common I find in all of them is the toxicity, denial of facts and denial of math, and people evading any type of debate at all costs. Most of the time I feel like I put effort for nothing, very few people take what I write in these groups seriously. And that's in the few cases I don't get straight up banned and censored.

In a recent case, I mathematically demonstrated why Bitcoin will not grow any close as Bitcoiners believe it will. The BTC blockchain averages at about 3tx/s. Maximalists tell you to use Lightning, so opening/closing a Lightning channel once a month equals 24 transactions per year per user. That means Bitcoin with Lightning would scale, at most for a bit less than 4 million people.

Nobody attacked this argument anyhow. I was called a shitcoiner, HFSP, scammer, baiter, and the others you are probably used to. I haven't even mentioned any other cryptos whatsoever.

Now, I am slowly getting more people to open their minds. Bitcoin isn't what most think it is, their developers are directly related to bankers and big payment processors and they harm the network for personal gain.

But how come is the Bitcoin community so shit? How did that happen?