Facebook Messenger, WhatsApp (a facebook company) and Instagram (a facebook company) make Facebook the dominant messaging platform with billion+ MAU.
Heck FB Messenger and WhatsApp are the #1 and #2 services and Facebook controls 3 of the top 6 by monthly actives...
IMHO, whenever a service shuts down, no matter if it's helping a million users or just one, it's usually not good news for those using it. Google Reader being a great example of that.
I took it as good news more for the Facebook investor. The piece didn't convince me of that, but I think that's what it was going for.
-Don't let any one app to be the sole place a user gets his content (I'm with you here as I didn't create Facebook)
-Parse is no more (I read that somewhere too)
-Now you can focus on leveraging an existing platform to bring engaging content to your users. (What if I want to service a mega niche that doesn't exist or generally wish to be foolish enough to believe I can compete with my idea? Wouldn't it be convenient to leverage a Backend as a service like parse? Shame they shutdown)