As for the article, I think this is generally PR and corporate speak. Whatever their reasons were, they apparently didn’t shut down the initial XMPP servers until 2022 so it was a reliable technology. There “simplification” was bringing users into their ecosystem to more easily monetize their behaviour. This goes along with your last paragraph, at the end of the day the corporation is a for-profit organization. We can’t trust a for-profit organization to have the best of intentions, some manager is aiming to meet a metric that gets them their bonus. Is this what we really want dictating the services we use day to day?