I also hate being that guy, but Spider-Man first and foremost is a COMIC BOOK character! Yes, he’s had video games, but his main source material that originated from is from comic books first!
I know as of these days we like to say, Smash almost don’t have any actual rules anymore, aside from some minor exceptions, but if there is STILL one rule left standing, it has to be: “it must be from video game origin” or they have to be strictly video game characters! That’s really the only rule left to when it comes to a character inclusion for Smash.
It’s like comic book characters are becoming the new argument, like anime characters. It doesn’t help that just yesterday, I saw someone on Twitter really ask for Wolverine and tried to make an argument for that. Besides if Sony really were to get one anyway, it would be Kratos or even Nathan Drake.