The trouble re: Marvel and introduction arcs is that they've said a number of times over the last few years that they're "not going to do them anymore", but they just keep doing them! They can't help themselves! She-Hulk was meant to start in media res and only go to her getting her powers like in the mid-season, but nope, Jessica Gao got told to just rip that episode out of place and put it as the first one (leading to it having underbaked CGI and poor editing/pacing), presumably by Feige, and after he'd been saying "We trust audiences, we don't need to do origin stories!" for like, years, at that point.