I've had plenty of rosettes bloom and die, but it's usually been the largest one of the clump, occasionally the largest couple, always leaving behind the majority of the group.
I don't know if this is common, perhaps it is, but has never happened to me before, but almost this entire clump is either blooming or budding. Almost a dozen rosettes going off at once. If you look closely at the very bottom and slightly to the left of center you'll see even one of the smallest of the group is forming a little bud.
Is this caused by something, some stress reaction making them all think they are going to die and must reproduce right now? Or just bad luck? Is there anything I can do to stop it? While it's very pretty, the thought of losing this whole group really bums me out.