It says it's going to save Marvel's slump - it can't, in itself, make other Marvel movies better. Marvel need to focus on telling a great story first and building the universe as an added extra (if at all). That's how the early MCU films worked and they were successful but after Endgame they reversed it.
It's like trying to talk about cars and not talk about Toyota. Like it or not, Marvel has made some of the biggest and most influential movies of the past 20 years.
I'm not sure what you mean by "site" - this community covers a wide range of films. Deadpool gets mentioned in the mix of content as a big, upcoming film. It'd be weird not to post about it from time to time.