I actually can’t answer them, because I only admin this instance, I don’t run it.
While I’m sure this is not the case, it’s entirely possible that the people who do run this instance are running a fork of it that does all of those things. It couldn’t log your IP address or block your VPN, but it could mine, and your instance could yours. And I haven’t read the Lemmy source code, so I don’t know what even an unmodified Lemmy logs.
(Actually this instance is running a fork right now, or rather a branch: 0.19.6-beta1, because lemmy.ml is the core Lemmy developers’ instance for testing beta code before releasing production versions.)