Hm. As long as you only interact with Lemmy through a (trusted) VPN, or even through Tor, you’re just as safe using Lemmy as you would be any other website. Servers can always see your IP by default, and the owners of those servers can be coerced to give it away by whatever external forces. If you hide your IP, they can’t. That’s pretty much it.
I literally pulled the original game out of a cereal box in 2010 and proceeded to have hours upon hours of fun with it. It was on one of those funny small CD-ROMs. Good times.