I'm kind of neutral on it. I don't love it, don't hate. I wouldn't have minded a 5 that quickly morphs to the S in the title reveal in the trailer, just to give a nod to it being the 5th. I will say that the Scream series is in a unique position to actually comment on that trend, so it could work in that sense.
And yeah, I mean "5 Cream" was an inside joke with the cast and crew, so I think they are embracing that this is the 5th film but probably didn't want to go that direction with the marketing because it does sound pretty silly and wrong haha.