I suppose that switching to Brave will be one of the best solutions after all.
They have already comment this in June:
https://brave.com/blog/brave-shields-manifest-v3
replies(3):
I'd argue its far more trustworthy than modern day Firefox/Mozilla, they're not exactly the second coming these days.
What makes Firefox more trustworthy?
Tell me I can turn off the evil intent, and not just one of its manifestations, and we're in business. But you can't tell me that.
Once you've done that you're back to the same old question - why is <other browser> any better/safe/trustworth than Brave, which is arguably the only one that's gone out of their way to make sure its sustainable and not reliant on farming user data to the highest broker.