It's the default in Firefox for Linux. It's a browser setting, not an OS setting. And in order to turn it off you have to do really obscure stuff in the Firefox launch options, it's funky and makes no sense.
In all seriousness though, this line of thinking is, at best, going to feel like constant victimisation if one engages in it far too often. Don't be surprised if people don't go out of their way to give you money they don't have to give you in order to get what they want in the way they want it. Lost revenue refers to revenue you could've captured if you had done things differently, so do them differently. If there's any damage done, it's damage you did to yourself.
>The issue that you have with Protonmail seems to be that they enabled IP logging in response to a lawful government request. Google logs IP by default, scans your messages, etc. It baffles me that there is less outrage at that than this single case.
So in case the government is out to get you, both options will lead to the same outcome: your IP address is revealed.