Tom Holland is an amazing Spider-Man, but he isn't the Amazing Spider-Man. Andrew Garfield is the best Spider-Man. He just is. Even if you can make a case for Holland (and Spider-Man: Homecoming was great), you definitely can't for Tobey Maguire. The strongest argument can only be made for Garfield.
Seriously, the only thing worse than Emo Spidey is the James Cameron version of the character that mercifully never came to be. Better than the worst possible scenario, doesn't mean the best. The Amazing Spider-Man is widely considered one of (if not) the best versions of Spidey. Nobody embodies Peter Parker like Garfield, certainly not the improbably old Maguire, and Holland's just a wee bit too twee. Garfield is truly the only reasonable option for the greatest Spider-Man of all time.
Garfield Is A Life-Long Spider-Man Fan
If nothing else, Garfield deserves credit for this quote from an interview with Cinema Blend:
[Spider-Man] has been such an important symbol to me... It's given me so much hope as a skinny little streak of piss, who feels more powerful inside than the looks on the outside. Every skinny boy's dream.
Garfield's love for the character really shines through in his performance. He clearly has great respect for Peter Parker, and he does the character justice. He never would have agreed to Emo Peter from Spider-Man 3. That alone proved Maguire's (or at least Raimi's) fundamental misunderstanding of the character.
Garfield Really Understood The Teen Mentality
Holland is a great Spider-Man and he's also an actual teenager, so some might disagree with this point. But consider: Garfield was 27 when he first donned the Spidey suit, young enough that he could vividly remember what it felt like to be a teen, but old enough that he'd had some time to reflect on his younger self and really understand the defining characteristics of that age group.
Some teenagers can lack the necessary introspection to really understand themselves; it's kind of the whole dilemma of being a teen. You're consumed by hormones, leaving little room for accurate self-reflection. Maguire, meanwhile, was (and definitely looked) way too old to play Peter Parker. True, Maguire was more than a year younger in the first movie, but he somehow looked simultaneously 12 and 45.
Garfield's Peter Made His Own Web Shooters
Raimi decided Peter Parker needed to naturally produce webs from his wrists (which turned out to be a really convenient place for them to eject). The Amazing Spider-Man was the first time we got to see Pete put his scientific acumen to practical use and make his own web shooters, as he did in the comics.
Sure, we later saw Holland do some tinkering of his own, but Garfield was the first, and Holland's suit caught its own flack for being baby Iron Man armor. Garfield's character was the first to show us Peter Parker's science chops, while we learned about Maguire's scientific excellence via his teacher telling him (and us) how good he was in the subject.
Peter's Relationship With Aunt May In 'The Amazing Spider-Man' Was Much More Satisfying
Aunt May (Rosemary Harris) and Uncle Ben (Cliff Robertson) were in their seventies in Raimi's trilogy, for which the MCU overcompensated with the youngest Aunt May yet in Marisa Tomei. Sally Field seemed to be the most age-appropriate Aunt May of the three, or, at least, her relationship with Peter felt like the most appropriate mother-son relationship.
She wasn't too old to be involved in Peter's day-to-day life like the original trilogy, but she wasn't so young she existed basically as a prop for hot aunt jokes. The dynamic between Garfield and Field was the most rewarding.