Meanwhile in countries that actually care a lot about privacy with good historical reason, like Germany, have no problem using open source and self hosted services whenever possible, especially at the state level.
Also the German government, French government and others are using open chat systems like Matrix and favoring open source privacy respecting office and documents systems, forgoing giving the US government controlled FAANG companies, who happily have the CIA/NSA as customers, too much control of their internal affairs.
My favorite evidence of the radically different culture is going to hacker conferences.
Go to Defcon and everyone has a stock Chromebook or a Macbook. The Privacy Village asks everyone to accept the ToS of Discord, Twitch, and Google to participate. It would be a funny joke if it were not so sad.
Meanwhile at CCC in Germany... you are hard pressed to find anything proprietary at all from running the conference to the tools of choice of those that attend it. Germans remember well the cost of giving too much control of information to a central party. They have no problem making some UX tradeoffs to have freedom.
True most people will go with the default. But you have lots of sat, especially compared Reddit.
Google is good about this too.