Heh First it was because he isn't a damn avenger and now its something something emotional ties something hahah
Spiderman was a random stowaway by happenstance who got thrown in for the sake of just doing it [his popularity] and it worked out great for him, even tho ultimately things could've played out the same way [Thanos winning] with minor tweaks without SM.
Those wakandan characters, including cap's team easily had much potential for banter and exploratory build up in Wakanda, including strengthening the emotional ties of cap/buck with tchalla/okoye/shuri etc. but the directors wanted to give that time to the space ppl cracking jokes and talking dairy product brands [I'm half joking]. And above all, probably didnt think BP would be what he is.
Which is fine [seriously, it is], but we'll see how they allocate the time to those who didnt get it in this first go around, in A4, as I've said.
And then we'll see how drastically things change for BP and Wakanda in a post-BP mcu. That's what's really exciting for BP fans
Spider-Man has an emotional tie to Tony breh which is my point. Everyone who got a lot of screen time in this movie has a direct emotional tie to either a main avenger or thanos. So it makes sense to give them screen time and anyone else gets sidetracked. That’s how I’d do it anyway *shrug*