It was so great to see the previous villains and Spidermen back in the movie. It was nostalgic. Also, Marvel acknowledged those movies existed parallelly with the current story, not just plain reboots after reboots.
It was fun and action-packed. Some sad parts. My only complaint would be they digitized away too much wrinkles; so did Tony Leung's wrinkles in Shang-Chi. The actors looked too young for their ages.
I thought Marvel had lost it with Eternals, but Spider-Man No Way Home showed that Marvel still hasn't peaked yet. There are still so much Marvel could do.
When Spider-Man said Dr. Strange's mirror world was just Archimedean spiral, Math Teacher almost choked. If Spider-Man had said magic was just math, I think Math Teacher would have cried.
How It Should Have Ended was correct; this movie should win every Oscar. Spider-Man: No Way Home was the only reason anybody left the house to go to a movie theater in the crappy year of 2021.