The criticism is largely because there's no transparency into it. Yes, the proper course of action when you have a harassment problem is to fire people, but you also have to fire the right people. Firing those who commit the harassment is one part, but you also need to fire those who cover up and permit the harassment to happen. We also don't know how high up the people who were fired are. If they only fired a handful of junior engineers, that's not going to help.