Twitter, Youtube, Reddit, and TikTok don't have megalomaniac CEOs who got rich selling out their users to advertisers while spending that money on PR messages like "privacy is dead" and then turning around to buy all the mansions around theirs so that they can protect their privacy.
Also there's that little itty bitty issue where Facebook was purposely manipulating people's timeline feeds to see if they could produce depression-like symptoms, without informed consent.
Don't forget the hostile attempts at monopolizing information access in India and 3rd world countries with INTERNET.org that was so nefarious I was very scared, fortunately india thwarted facebook, inc's malicious plan and rejected it... but internet.org still went on to poison other 3rd world countries like the philippines and indonesia, before their nescient tech industry even had a chance to stop it.
In addition, the nefarious bribery of brazilian telcoms to allow whatsapp to have unlimited and free network bandwidth, so as to out-muscle any competitors.
Indeed, fb did push out PR messages like privacy is dead, although I'd love to cite some source on that... all I want to say is, Privacy isn't dead facebook, you're dead!
I don't think YT or Reddit are any where near as insidious as FB, Twitter, and TikTok.
YouTube's feed basically shows me what I am subscribed to which is interesting shit I am legit interested in. I don't see any of my friends talking about their amazing lives, or any political BS, at all. The comments section is a 3rd class citizen in much of their UI and less toxic than friends all piling in and arguing about crap.
Reddit is global conversations, the topics and comments can be toxic but it's not an echochamber by design. I will say though, Reddit does make me sad sometimes so I have to work at it to use it in a healthy way.
Twitter, Tiktok, and unfortunately more and more Instagram are also sludge pools IMO.
Why not Twitter, YouTube, reddit and TikTok?