>"We don't use Typescript because there are people that exist who use it for CSS when using React"
This not at all what was being conveyed, you made that up in your head. The OP didn't say they were not using Typescript because someone else used it for CSS, but that's what you seem to have written.
> React’s ecosystem has devs slapping TypeScript on everything—even CSS—which is overkill
It's actually EXACTLY what they're saying. They're using it as an example of why they don't use Typescript (ie people use React take it too far by using it for React). What does React that have anything to do with not using Typescript?