I read it the same way you did. If you want to terminate the EULA, then they request you remove your copies of the game. In that snippet it says nothing about them arbitrary demand you delete all your copies.

Exactly this. And it's kind of logical actually, when you go crazy like writing Larian "fuck this shit I hate the game, you can shove it up your ass" it's no surprise you're fed up with the game and don't want to have it anymore. It's like when you literally destroyed diskette/CD/DVD back then in a rage (or fighting addiction).

They both are. Both agreements can be terminated for any reason. Larion's says nothing that would prevent them from terminating the agreement, it only clarifies that the signer can. There's no real difference here.

That's one way to tell everyone that you didn't understand the comment.