Why React and JS-heavy frameworks are often the wrong solution for web development

React (et al) is almost always the wrong solution.

React has its place, I'm sure, but it has turned into the proverbial hammer that makes everything look like a nail.

JS-heavy approaches are not compatible with long-term performance goals.

for any decently sized JS-heavy project, you should expect that what you build will be slower than advertised, it will keep getting slower over time