I agree here, but Parker is ALSO canonically a science and technology nerd.
Peter ALSO likes to talk, because he’s nervous, and snarky banter is how he copes, but he tries to avoid any sort of identifying information, creating a situation where he just kind of mirrors whoever he’s talking to, and nobody can agree what age he is.
(Marvel characters barely have canonical ages, so I’m making this up)
Tony Stark (Late 30/ Early 40s), Comic book ages are fake) has had heated arguments with spider-man about the Starkphone’s latest specs, while also complained loudly about Oscorp, is convinced that Spider-Man is a 30 something engineer, is similarly convinced that Spider-Man probably works for him, and keeps trying to drop hints that like “You know, I respect you, you don’t have to hide from me because I’m your bosses’ bosses’ boss”.
Hawkeye (Early 30s) Human Disaster/Secret Agent has reminisced with Spider-Man about being a human disaster, is convinced that Peter Parker is, like, 28 at the youngest. He knows Spider-Man doesn’t collect a SHIELD paycheck or anything, so his mental image is a pretty accurate take on most Adult Spider-Man versions. Brilliant kid struggling to make rent on a studio apartment in Manhattan.
Black Widow (Age ???), Professional Spy actually clocks Spider-Man as a Teenager pretty reliably, but doesn’t believe her own assessment, because this is America. American kids play basketball and worry about Prom, they don’t do this stuff. I mean, yeah, it’s possible, since he has powers and such, but no, he CAN’T Be as young. She refuses to believe it.
Captain America (Mentally late 20s, chronologically almost 100 years old) has no idea what kids are like these days. But he’s been studying 20th century history, and Spider-Man has mentioned an Aunt he’s close with who lived through some specific events. Assuming that this “Aunt” is, like, 20-30 years older than her nephew, instead of 40+ years, he believes that Spider-Man is solidly in his 30s.
Bruce Banner (40s): Is convinced Spider-Man is also an Adult, but for opposite reasons. In Bruce Banners mind, Kids are rude, and Spider-Man has always been very polite to him, therefore, an Adult, although perhaps a youngish one. With his knowledge of Science, Banner imagines Spider-Man as a PHD student.
Thor (Age ???? But quite old) Knows that Spider-Man is an adolescent. How old are adolescent humans? 42? That sounds about right. Spider-Man is a 42 year old adolescent who lives with his Aunt. That aunt, who Thor has picked up is quite wise and venerable, is probably somewhere around 500 years old?