Definition of concern trolling. As if Reddit gives a shit about your privacy either.
Reddit: You're giving your information to strangers! You don't know what they'll do it with it!
Me: Weren't you going to sell my data?
Reddit: Yeah, but that's different! We're a respectable adult capitalist business. These are fucking commie pinko freaks we're talking about here!
All options that aren't federated are just as reasonably suspect when it comes to good stewardship of your data. A federated universe means if you really are that worried about it, you can spin up your own instance and be able to trust yourself with your own data.
Also, is it really a shocker that Reddit would turn to McCarthy-era Red Scare tactics? What's next, hiring the fucking Pinkertons like Wizards of the Coast did?