I just wanted to ask if healers are expected to dps in flashpoints?
If everyone is already topped off and damage is coming in slowly and manageably, most people would expect the healer to toss out some extra DPS. Of course, in the situations you're discussing where you're not even remotely topped off and are struggling just to stay alive, it's not expected in the least.
It sounds to me like you're mostly dealing with DPS that queued up as healers for the faster queue: they're not acting like healers because they're not really healers. It's annoying when it happens, but you should not feel like you're providing unwarranted criticism when they're spending more time attacking than healing, especially if they're putting the group at risk by behaving as such.