Honestly this is just pure paranoia because nobody has given a solid reason as to why they would give a single shit about the few hundred thousand users here. Your only argument is "well it exists, so maaaybe they'll use it but better" which has no basis. As for losing control of your data, you have no control of your data here. It's public information. Any person, corporation, computer literate cat, etc can already scrape everything you post here. Don't mistake anonymity for data privacy.

Like I said, block em, defederate, whatever measures you want to take are an option, but for the love of god let's just stop parroting nonsense at eachother because it sounds clever. I came here to get away from reddit culture.