Cuz the comments throught Lemmy/Piefed seems to indicate that literally every user on here is a FOSS/Dencentralization Purist and has 100% abandoned mainstream platforms.
I wonder if this is actually true or just a small minority of users being overrepresented.


Agreed.
I also find it funny how you (mostly) read about (F)OSS purists here but readily engage in using Chromium based browsers like Brave.
Like…why?? You (not you OP :p) can’t preach about FOSS but also use Brave in the same contexts.
Edit:
Okay Brave is open source. But what they do and for what they are in the news for, are (IMO) not in line with what F(OSS) projects usually stand for.