There is one big reason why they would care - antitrust and EU regulation protection. They have no intention to destroy the platform Rather they want to please the regulators as they are leveraging the open standards. The EEE strategy is a conspiracy theory. Government regulations are the most probable reason for this change.
Or Logseq is a great Obsidian alternative with no account needed and apps for Linux and Android. You can sync it with Syncthing.