That's a bit of an outdated meme.

There are lots of micro libraries because there's zero barrier to putting something on github and NPM, and there's a huge population of people wanting to practice and demonstrate their programming skill.

Many of those are irrelevant. Guess what? Me throwing a "cool-cucumber.js" library doesn't obligate anyone to learn or keep up with it.

It's like a random author publishing a random book. Who cares? you don't have to read it.

The rest is much more stable. There's a bit of fluff on the surface but underneath is not changing that much.

People fear things outside their comfort zone, and resist understanding them.

My father is afraid of git. My sister in law is afraid of open source software. And, that fear is reflected in their career choices and the quality of their code.

FUD; what major upheaval has been in the field since idk, Vue was released?

Major upheaval? I think big dotcoms efforts to forcefully push their vapourwares onto the dev community in attempt to gain developers' "mindshare" reaching a point when that becomes genuinely obnoxious.