That was a reportable abuse of the Vote Kick function. Sure, it might seem petty, but they were wrong to kick when you were just trying to help. Now I hope you were tactful in doing so, because verbally berating someone might be the exception to the rule, but I'm giving you (and anyone) the benefit of the doubt that you were nice about it.

Beyond this, I can't stress enough; the system itself is not flawed. The human element is. Stacking punishments will only backfire and draw people away from dungeons, making queue times even longer. So no, there should NOT be more punishments. I do however believe that - with SE's way of investigating player reports - individuals should be held more accountable. Yes, it makes more work for them, but it spares the entire player base from blanket punishments/restrictions.