Still wonder whose idea it was to name it "Marvels" instead "Captain Marvel 2". Which just made viewers confused

I was confused for a long time what the hell it is and why "Captain Marvel" vanished from the title.
Was it spin-off? Was it another movie, not related? Is Brie Larson simply a guest in this spin-off?

Only after trailer came up I understood that this has to be "Captain Marvel 2". Why does it have another title we will never know.

And how many people just missed it and never went to theater. Thinking it's some another new Marvel Universe movies about characters they dont know. There are really ordinary people who may see that "Captain Marvel 2" is coming out and may check to see it since they saw first one. But they see "Marvels" title and think its some new movie with new characters no one talks about and they ignore it.