I mean, it's not unrealistic. Game Pass subscriptions are clearly only going up and that's without really any major hitters dropping yet. Doesn't take a rocket scientist to figure that out.
But to go straight from 25 million to 100 million just because of ActiBlizz deal? No that's going to take at least several more years to reach those kinds of numbers. Not to mention stupidly consistent releases, which remains to be seen.
You called down the thunder, now reap the whirlwind