people: ask their dependencies to follow semver, for fuck's sake already
also people: make a surprised pikachu face when the major version is incremented with every release

(i have been both, at times. this is about me. this is also about others who i've seen be a lot more militant about this issue)

the thing is, if you have a sufficiently complicated application it is not feasible to determine what is a "breaking change" or not. this complexity limit kicks in long before you get to a "browser" or a "JIT compiler" but it is definitely well applicable by that point

i think what people mean when they do both of those things are a mix of "please stop adding features entirely. only fix bugs" and "please only make changes i like, but not the changes i dislike" depending on maturity level. that's not really how open source software works though