I find it quite a mental leap to go from "Microsoft improved connection scalability in Postgres" to "Microsoft is going to extinguish Postgres, arguably the most popular open-source database in existence".
EEE is not some discredited strategy from Gates era Microsoft that magically vanished with a few executive changes, it is a fundamental defense mechanism of umbrella enterprises driven largely by a bunch of little decisions by self interested actors at all levels of the hierarchy. Gates' Microsoft helped give it a name with a catchy alliteration, but Nadella's Microsoft will define what that phrase means in the cloud era.