Eh dunno, sounded pretty fluffy to me. Dressing up the move to Square as some 'community' thing when it's likely simple pragmatism, and so on. (Though nowhere near as apparently rage-inducing the other guy found it lol.)
RethinkDB was very straight forward: https://rethinkdb.com/blog/rethinkdb-shutdown/
Wattage too: https://rethinkdb.com/blog/rethinkdb-shutdown/
Hackpad from a few days ago: https://hackpad.com/
The above make their intentions unmistakably clear in the first line.