If you hire a house cleaner, and the house cleaner doesn't do a good job, would you fire yourself from the house? What repercussions will you personally suffer?
Are you implying the 10% being fired are all bad workers? What if the house cleaner was not the problem here?
If I had a roommate who spent huge swaths of our monthly budget on house cleaning we didn't need, I might tell them to go find another place to live.
Or to stop stretching metaphors.. The investors should be mad that the layoffs were even necessary.