This will greatly enhance the intelligence of future generations and make education accessible to almost everyone on earth at a similar high level.

I don't think that accessibility in AI somehow correlates with the intelligence of the subjects using it. It can actually work in the completely opposite way where people blindly trust it or people get used to using it in a degree that they're unable to do anything without the help from the technology. Like people who are unable to navigate 2 blocks from their house if they don't use google maps navigation even though they do the same route every day.

If large companies and influential people move to Mastodon [...] and no ads.

large companies and influential people are in the commercial platforms because of the ads. There is literally no reason for them to move in a place without ads.

you missed the point where the open source devs were in a constant race to adapt to all the google-"innovations" and actually troubleshoot on them which ends up demotivating