Hi! Although your post is full of reasonable advice on maintaining privacy online I want to challenge you on the statement that the threat model matters. The contrapositive of the statement “I don’t need privacy if I have nothing to hide” is “I have something to hide, if I need privacy”. This puts those marginalized groups you mentioned in a position where simply by using a privacy tool or technique, they draw suspicion to themselves. It might immediately raise subconscious alarms in internet communities like facebook, where the expectation is that you use your real name.
The only way privacy measures work for anyone, is if they’re implemented for everyone.
Further, I’d like to challenge the concept that a cis white tech bro has nothing to hide. There’s a big invisible “for now” at the end of that statement. The internet, mostly, never forgets. We’ve had waves of comedians get “cancelled” over tweets they made years ago. Times change, people grow, laws regress. Posting statements about abortions is as of this year, suddenly unsafe. Maybe posting about neurodivergence comes next. Who knows with the way the world is going, maybe 5 years from now you’ll regret having posts on /c/atheism associated with you.
I think a good way to be considerate of privacy is to think in terms of identities, what those identities are for, and what links those identities. Does your identity on github need make comments about your political leanings? Should your resume have a link to your github? Does your identity on etsy need to have a link to your onlyfans? Does your dating profile need a link to your reddit account? Your “2nd” reddit account? Not all of these are clear yes or no answers, they’re just things to consider and make decisions about. Also, consider what class identities you only have one of, and what class of identities are for the most part unchangeable, e.g. attaching your phone number to two separate identities functionally links them.
I think you can link a second Whatsapp app, similar to the web client. your primary one needs a webcam to read the QR code though