Yeah this article is only about React. But it makes sense that someone would think this way because many dev's think JS web apps==react only.

The problem is react is "good enough" for most cases and the performance degradations happen slow enough that the devs/project leads don't see it until it's too late and they are already overly invested in there project and switching would be too compliated/costly for them.

Svelte/kit and properly optimized packages solve almost all of the "problems" this article tries to bring up.