I felt completely left out, because although I had seen the last Spiderman movie, I hadn't watched Wandavision or half of the TV shows. It was like trying to follow a game in a sport you only have a casual interest in: you kind of know the rules but have no idea who the main teams or players are or who is up or down in the league, so your enjoyment is limited to the occasional good goal or pass (or VFX shot in this case).
In contrast to DC movies - very hit and miss in quality, but you can at least watch a movie without having to follow a dozen other TV shows and other films in the franchise.