This sounds like a really atypical project. Consuming 25% of your CPU is a lot! I hear people mention those kinds of numbers only for Slack, which does have a lot of functionality.
I'd just point out that for the average project, the main advantage is that with something like Solid or Svelte, it will load in less than a second, vs. a few seconds for React, especially for something simple like a blog where you don't want to think about perf or optimize much.
It is atypical, yeah. It's a speed-reading app, so it flashes a new word on the screen every nth of a minute, where n is how many words per minute you want to read.
Still, I'm tired of using a normal web application and feeling the UI lag when I type, etc. I suspect that if you start off with a project like Svelte or Solid, you'll have a longer runway on your app before you get to that level of suck.
I'd just point out that for the average project, the main advantage is that with something like Solid or Svelte, it will load in less than a second, vs. a few seconds for React, especially for something simple like a blog where you don't want to think about perf or optimize much.