The nuke might be legitimate?

That's not a lot of state lost. Destructive operations are easier to replay than constructive ones.

Is Wikimedia overreacting then?

	▲	wizzwizz4 an hour ago \| parent [-]
		No: from what I can tell, they're being conservative, which is appropriate here. Once you've pushed the "stop bad things happening" button, there's no need to rush.