But I'm still not getting why you're saying he's second fiddle other heroes being in his movie doesn't mean he's subordinate
No, but making said characters' presence in the movies central to their overall story or certain elements of said story - regardless of how much overall individual screentime they actually get - does.
NWH at least justifies things in a way that makes Stephen Strange being present mean something for MCU Peter as a character and that contributes to his growth; same with the characters from the Raimiverse and the Webbverse.
You pull Tony Stark, Fake Nick Fury, and Happy Hogan out of Homecoming and Far From Home (or at the very least greatly truncate their involvement) and those movies instantly become better (IMO) because then the focus shifts to where it belongs, which is Peter and his individual character arc.
My dislike of the general overall direction that the filmmakers chose to go in with the Tom Holland/MCU Spider-Man movies is well-trodden ground at this point, though, so I'm going to move on to other things, like saying that I'm currently watching Doctor Strange in the Multiverse of Madness and really enjoying it.