ultimately I think it’s different. Mysterio leaking Spider-Man’s identity isn’t an “absolute point.” Neither was Strange’s girlfriend saying yes to going instead of saying no. Those would just be “nexus point” events in tva terms. If Mysterio’s henchman decided not to release Peter’s identity, that simply would have created a new nexus event that the TVA likely would have destroyed. The reason Strange’s girlfriend’s nexus event decision did not result in a nexus event is because it led to an apocalypse, which doesn’t register on TVA. And the reason dr strange trying to save his gf is called an “absolute” is because the only reason he became a magic user is because she died, thus he only uses magic if she dies, this if she doesn’t die, he doesn’t learn magic which means he couldn’t go back in time to save her. It’s the same thing that happened in The Time Machine movie, like literally, dude only succeeds in making a time machine because his wife dies and so he can’t ever save his wife because the universe will not allow that paradox to exist. Thus, if it’s actually managed, the universe is destroyed.
The reason this spell likely even is able to work now I’m Peter’s case and not instantly be TVAd or apocalypsed is because 1) it doesn’t create a paradox, 2) the TVA isnt on the same opporendum to keep the Sacred Timeline, or 3) is supposed to happen according to the Sacred Timeline per the infinity war time travel shenanigans.
Damn. That wasn’t supposed to take so many words.