DarrenFreemansPerm
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Sure it is. It's simply a way of saying they're being childish. You still haven't come up with an alternative.
I don't see why there needs to be an alternative as I don't see why there needs to be a collective name used in the first place, but as you seem to so desperately crave one what's wrong with anxious, impatient, irritable, childish (your word, not mine). It gives a post a bit more credibility than bed wetter. It works both ways too, I think the tinted specs brigade or whatever is just as pointless.