Theres a lot to like here. Visually the movie is great; and it's nicely imaginative in the different spider-people that get sucked in. BUT a movie is not just visuals, it's also story and tone, and those were lacking.

Maybe I'm just not the target audience but the story was just so heavy-handed and (honestly) frequently boring.

Yes yes, we GET IT, Spiderkid lacks self-confidence and has to find his way. That might have been an original idea back in 1962, but it's not exactly original 60 years later. Constantly pushing that them ruined the movie.

Likewise the whole "anyone can be spiderman" preachiness.

The best Marvel movies have taken it as given that we either know the origin story, or that it can be unrolled in the background as part of a different story (best, IMHO, at doing this was Captain Marvel). I'd far rather have seen this story be primarily about Spiderverse with the whole Miles Morales becoming Spiderkid very much in the background, not something you have to bludgeon us with every few minutes.