What can I do to stop this?

[Brian_]

I go in knowing there is the possibility that I won't get a good run and that there is a 30 minute penalty in the event I should choose to leave.

That is the full description of the system. And, despite knowing the current state of DF, SE has recently said that they feel the penalty is appropriate and have no plans to change it. What many other people here are doing is applying a layer of white knighting and social-justice-pursuits based on personal biases onto the existing system. Given who they are and their other posting tendencies, I can't say I'm surprised.

Unlike these over righteous people I don't presume to tell someone how to play this game. There are times I've queued as a healer or DPS and had a tank leave. If it's not a run that's likely to get a replacement, I leave and re-queue. At worst it's a 15 minute wait for a leveling roulette queue as a DPS. Big deal.

But really, if this is the stance people want to have, then okay. I assume that any time you encounter anyone that isn't playing this game the "right" way, you also pick up your keyboard and club them with it. I assume you will spend 60 minutes anytime you queue into a Ramuh EX through mentor roulette trying to teach people how to pass a DPS check or handle priority mechanics. I assume that any time you encounter a DPS not playing their class optimally or a healer not DPSing, you make it your mission to fix them. I assume that anytime you see someone without materia melded in your gear you take a dump on them.

In the meanwhile, I'll just live and let live and let people enjoy the game how they want to even if sometimes it comes at a slight inconvenience to myself.