Do you know what happens to protocols over time? They get extended with user facing features or they stop being used and die.
Once again, Meta got 100M users in a week, they do not need to support the fediverse. Stop acting like this is some calculation and not just them building the same basic features they have in their other platforms that users expect into their new one.
No, this feels like a massive corporation with massive marketing and market research departments succinctly breaking down a concept that most on the fediverse nerd out too much to do.