Correct I value basic usability (the ability to use many plug-ins in this case) over privacy. This is why I don't use proton, cause I can't actually get anything done with it.
You've already decided that you are not willing to use it over issues you have with it: that choice is fine. Telling others in relevant discussions why you made that choise is, too.
No-one asked you why you chose not to use Firefox in a thread about Gmail. Yet you managed to inject your FUD here nonetheless: Firefox can handle 5+ addons just fine. But now some random passersby might get the impression that Firefox is a burning dumpsterfire based on random negative critiques that aren't even in the right place nor true at all. That helps exactly no-one.