Requiring evidence for any religious claims that are made is not "opposing religion". When religious claims can be proven using the scientific method, then opposing religion in science will be unscientific.
Currently the best explanation for evolution does not include anything religious.
Proton passkeys are stored in a password manager, which he specifically calls out.
If you have a password managed and know how to use it, you're already a lot less susceptible to the problem that passkeys are trying to solve.
Personally, I think passkeys are great for tech-savvy users, but I wouldn't dream of recommending them to non tech-savvy people. Password managers are still used by the minority, that needs to be fixed before passkeys are useful.
Changing your user agent will not stop you being tracked. Browser fingerprinting can work with heaps of different signals, and is very difficult to block.
That looks like a great tool, but only seems to support bookmark sync currently? Not quite a drop in replacement for Firefox sync yet.