First: All this AI stuff should be opt-in not opt-out and purely local.
Second: There is no good monetization model and the current status quo is anything but entirely transparent given one doesn't bite the hand that feeds it.
Third: No one wants anything except the browser. Mozilla keeps trying to do anything except make Firefox and it keeps backfiring.
Attempts to characterize the above as hyperbolic probably stem from a mismatch in culture. Perhaps some are expecting to read corporate blandness while this was written by a human person who happens to use occasional swear words and suggestive metaphors. That doesn't invalidate the above sensible points in the rant.