[alerighi]

Because these day JS frameworks are used even for things where a website with a server side MVC framework like in the old days (in whatever language, PHP, Java, Python, etc) would be just fine. Maybe just to add some stuff like form validation in the frontend whenever needed with jQuery or even plain JS.

Not to say that React is useless, it has its applications, but just 95% of the websites shouldn't need it, and I shouldn't download 20+Mb of JS files just to load the homepage of a site.

Another thing to consider, most people that work in tech have probably gigabit or better internet connections. Unfortunately, the user of the website don't have this luxury, and often use either mobile (4G if lucky) connections, or slow ADSL connection (at my house fiber has still to be brought, and I have a 13mbit ADSL).

I hate when just to load the homepage of a site it takes more than 30 seconds (I'm looking at you, ClickUp!). It shouldn't be acceptable: just use HTTP for what was created for, serving hyper text, and serve me hypertext. I would rather load in continuous small HTML files (that is fast even with slow connections because the latency is typically in the ms order even with ADSL) that download a full JS application each time I access a page.