The Raimi Spidey movies were ok for their time (except the third), but watching them now is incredibly hard.
The scripts are pretty damn bad, with some of the worst dialogue ever put on film. Some awful acting as well.
I actually liked Marc Webb's two Spidey movies better.
I've never understood the praise for Spider-man 2. While I liked it, some of the dialogue in it is excruciatingly bad.
Those movies were visually good but thats about it. Just about every main character in all 3 of them were completely miscast. Topher Grace being the most laughable and Toby McGuire is one of the most wooden actors of all time.
I saw them not too long ago and still enjoyed them, yes they're a little campy but imo it found the blend generally right. The characterisations were generally solid and the plot lines played out well other than the hopeless third act of Spiderman III (I thought the first half was good though) This was before the 'dark and broody comic book age came along, which only the Nolan movies and Watchmen got right. Don't forget these were the films (along with X-Men) that really got the whole genre kick-started in the first place.
Don't see the acting gripes? McGuire I thought did fine, Parker is supposed to be awkward, forgettable and easily picked on, something Garfield (good actor) absolutely was not. His only really embarrassing moment was disco Pete. JK Simmons was absolutely perfect. Dafoe, stupid mask aside, was fantastic, as was Molina, both of them really brought their A games. Dunst wasn't great but passable enough, Franco showed good range in Spidey 2, until the scripting screwed him up late in the trilogy. The only complete disaster imo was Topher Grace, Venom was never supposed to be there in the first place and got shoved in forcibly by the studios apparently.
Compare this to TAS, Garfield was miscast as Peter but a good Spidey. Stone was good but her character arc was very badly done. Martin Sheen only existed to be predictable fodder. The Lizard looked terrible although Irfans was fine. Leary was wasted. Foxx, Giamatti, DeHaan were all abysmal and every bit as goofy and over the top as the original trilogy villains, only they tried to exist in a dark world and looked completely out of place.
TAS was a competent enough movie, albeit introducing nothing new, but TAS2 was every bit as bad as Spiderman III in terms of plot, it just flailed around frantically.
Anyway, all just opinions, I think the Raimi trilogy gets more hate than it deserves.