Most of those are just rehashing of already discovered ideas. It is not like they have much of a secret sauce. Just put some concepts together. If you are a good developer, you can understand what they do in no time. But that makes it even more annoying to see the hype around something that is nothing special. Add to that a mountain of silly configurations and limitations due to design decisions, and you get a "modern" web stack. Take for example "tree shaking". I remember how there was a hype around it. Every second day I would see some post about tree shaking or read some blog or whatever, where people point out tree shaking. Tree shaking! Tree shaking here! tree shaking there! Most of them never stopped and thought about how they shouldn't need to be shaking, but instead should avoid putting that much shakable shit into their trees in the first place.

It almost seems like people are getting off on the fact, that they manage configuration complexity in web projects, as if that makes them somehow qualified. Instead they should be saying:

Wait a minute, why am I configuring all this shit? Why is my web app so big, that using a minifier makes any significant difference? Does my web app really do that much? Couldn't I get by with just rendering templates and add a tiny amount of JS?

But people do not ask and continue riding the hype train and it even makes them more in demand, because way too many people think they need this.