Should I use chromium based browsers or firefox?

https://lemm.ee/post/5939281

Should I use chromium based browsers or firefox? - lemm.ee

Chromium has better features, but with google announcing its plan to ‘drm the internet’ I 'm not sure if it’d be a good idea.

What better features? Firefox has pretty much everything nowadays, and is as fast as Chrome.
This is exactly why companies spend money on marketing, people remember these ideas and internalize them as their justification long after it stops being true. And Chrome being fast hasn't been true for a long time.
It still wins most benchmarks, so it’s technically true. Although not really enough to matter on desktop where it’s millisecond differences
I can confirm this, Chrome wins the benchmark tests and some CSS rendering but lags behind in DX. I’m not sure where OP got the idea that Firefox has fewer features from a developer POV.