Yeah. We built junk like react because browsers sucked. Compute was expensive. We pushed processing to the client so someone else could pay for it.
Now we have gone full circle back to building web apps using something like htmx and no longer have a complicated mess to deal with. Render html on the server. Push it to the client.
Besides, HTMX is just HTML with JS on top which devs have been doing for literally 20 years. Rails had that kind of functionality in 2005 because I remember using it.