Twitter is not real life.
The only thing this thing fails is if they cheap out and it's poor quality. If they pump money into it, cast the right actors (far from a guarantee with how iconic the original cast is), and creative a compelling visual world (again, tall order -- do they just repeat what worked in the movies, or go radically different? Will audiences accept that?), it will likely do gangbusters. Hogwarts Legacy was a smash hit, and I think with some distance, most people agree that game was "good, not great." People still flock to the Potter park installations and buy loads of merchandise. Unless they really flub it, this will be a massive hit, so of course they're going for it.