I would guess they realized they missed a notification or warning and feel a bit bad about the whole thing blowing up. Hopefully not though. The fact there were several high profile projects that got caught off guard puts the blame mostly on MS IMO.

I think the reason these things go viral is that a ton of people reading about them can see themselves in the same situation, minus the clout needed to get it resolved. A short term PR crisis is the best we can get, so everyone piles on.

I don't think MS will fix it though. IMO, they're more likely to create a program for open source code signing. That way they can capture all the high visibility projects, get a bunch of goodwill for being philanthropic, and all the small projects that don't qualify are too small to cause a fuss, so they can continue to treat them poorly.