A really big problem with web app dev is that it covers a very broad area.

Advice like not using libraries will have very polarized reactions (as evidenced by this thread) based on what kind of goals people are working on. Some react projects are very short lived so common problems like a library no longer being maintained are a non-factor. For large scale projects, typing loc is not a bottle neck, changing a foundational library that everything is based on is a potential massive timebomb.

And then there's all the decisions (like a date picker) where it can go either way.