What can I do to stop this?

[winsock]

If you were actually accommodating to people, you would see someone who really doesn't want to run a specific dungeon and let them be.

You still seem confused. How am I not accommodating the leaver? I don't talk to them after they leave and can't prevent them from leaving. I even leave dungeons if I need to... to change classes and queue for the specific in progress to help the group the leaver abandoned in their selfishness

You are the only unaccommodating person in the DF scenario.

Further, your argument is has cyclical reasoning.
According to your logic, the rest of the group doesn't accommodate the leaver and that means that no one is accommodating. (Which isn't true as the rest of the party has no choice as to whether a leaver leaves)
However, if you chose not to leave, then everyone would be accommodating. In other words, you are the problem.

If you really believe your own logic and have a problem with ppl's supposed hypocrisy, just accommodate the group and suddenly these people are no longer hypocrites.