

They disabled it with flags, but manifest V2 still existed in the code and could be enabled. This is about Google now removing V2 from the code. That will make it harder for third party browsers to include V2, since they would need to patch it back in and develop new patches to keep it working.

Proton did not claim anything; the CEO of Proton claimed that Republicans (not Trump) would do better on big tech anti-trust.
This view is not that crazy given that the person Trump appointed was doing her job quite well. Too well to the point that Trump removed her from the position later on.