What can I do to stop this?

[Brian_]

I will use your own terrible logic against you since that is what you seem to live by:
You telling me to stop calling you out for leaving is telling me how to use my time.
This makes you a hypocrit.
Therefore, I am justified to tell you how to use your time.

^ if you consider this logic bad (it is bad), your justification for abandoning your duty finder parties is also bad

This has gotten quite pathetic. I'll recap for you since you've resorted to such stupidity.

Tank: I don't want to do this roulette dungeon for whatever reason.

Your response:

If you dont want to do dungeons in the roulette, dont use the roulette.

In short, when you queue roulette, you consent to being available for any possible duty within that roulette.

Me: You don't get to lump your definition of how to use the roulette on someone else. You don't get to tell someone else how to play the game or make up rules they have to live by which go beyond the existing system.

You: I get to decide what you can and can't do and what is right and wrong. You're a selfish child.

The tank was just doing what they wanted to do. You are the one that clearly started this mess of finger-pointing, blaming, and shaming, but when it comes back around to slap you in the face you cry foul. The trademark of a self-righteous hypocrite.