Yes, it is amazing. Happens in politics all the time and people don't care - not till they look at barb wire from the wrong side, anyway.
Maybe they do care once their income drops to zero.
Last time I checked Ghash doesn't actually take a fee so I wouldn't say they don't care, it's more of the fact they don't care enough for them to skip that extra 2% or whatever other pools charge them. It is rather surprising that they don't see it as potentially a threat that could make their hardware useless (as far as earning money goes) but probably they're thinking that everyone else will switch and they can continue to mine feeless.
+1
Not sure, but the crash last night was probably caused by this (unless we think it was the Expedia news

). That was way more than 2% loss for any miner who sells immediately. So this behavior already caused a loss.
It gets interesting when Expedia and others announce that they changed their minds about Bitcoin because they no longer deem Bitcoin secure.