All these metrics are very short-term and the user dissatisfaction builds up over time. It makes sense for everyone involved (the short term is all that counts for investors and CEOs), but I personally can't wait to see Facebook eat itself.
Techies keep waiting for that and they keep falling upwards:
https://www.statista.com/statistics/277963/facebooks-quarter...
Facebook will not eat itself for a very long, long time. Their corruption of various nice things in life will be with us for many decades.
I have some faith that Facebook's redesign isn't losing them a ton of money, or they would've reverted it. It's probably increasing the KPIs they're trying to target.