The tech industry seems to attract people that feel personally attacked when someone else makes different choices that they do.
"Why are you using Go? Rust is best! You should be using that!" "Don't use AWS CDK, use Terraform! Don't you know anything?"
You need to be fairly smart to be in tech. People who grew up smart and were told they were tend to view it as part of their self worth. If someone disagrees with this person later on, their self with has been attacked so of course they are going to lash out.
The worst thing you can say to a dev is they are wrong. Most will do everything in their power to prove otherwise, even on the dumbest of topics.
Humans are tribal, which has both benefits and costs.
In technology, the historical benefits of evangelizing your favorite technology might just be that it becomes more popular and better supported.
Even though LLMs may or may not follow the same path, if you can get your fellow man on-board, then you'll have a shared frame of reference, and someone to talk through different usage scenarios.
It's not just the tech industry, this is a fundamental feature of humans as social animals.
https://knowyourmeme.com/videos/433740-just-coffee-black
> want to feel normal, to walk around and see that most other people made the same choice they made