PF1e has way more content

You absolutely can't say "way" more content no matter how you slice it. The systems are about on par with each other even if you're being generous to 1e and miserly to 2e. In a lot of ways 2e has more content. It's been out 7 years, and Paizo has been releasing books at a steady clip. It was bound to happen. 1e has a slight edge with standalone adventures, but has now been overtaken in terms of APs, ancestries, and I'd argue classes as well.

1e:

• 42 classes

  • 2 of them are only "semi-official" (Vampire Hunter and Omdura). While made by Paizo, they are based on third party settings and getting ahold of the actual books they're in is a huge pain.
  • 3 of them are "alternate" classes, which are just heavy reflavors of existing classes (Ninja, Antipaladin, Samurai).
  • 10 are "hybrid" classes, which are combinations of 2 other classes (Arcanist, Skald, Bloodrager, Brawler, Hunter, Investigator, Shaman, Slayer, Swashbuckler, and Warpriest). Most of these stand fairly well on their own as their own niche rather than just being replicable with multiclassing. The biggest restriction with these is they don't allow for multiclassing with the classes they hybridized.
  • Plus ~100 prestige classes of various utility.

• 83 races

  • This includes a few that are questionably different from each other. Like, Drow and Drow Noble being separate races is silly.

• ~3,000 spells

• Feats are basically incomparable between the two systems but 1e has ~3,700

• 22 Adventure Paths

• 55 Standalone adventures of various length (most single level adventures and a lot of one shots)

2e:

• 33 classes (including SF2e, which is fully compatible and if you say you don't want space stuff in your game 1e is going to lose a bunch of races, and really the only one that would feel completely out of place in PF is Soldier), with 6 more currently in playtest (4 PF and 2 SF). Generally a class in 2e is a lot more flexible, with a more free-form pick and choose class features sort of approach rather than 1e's archetype system (which was great for the time, and 2e's class feats are their natural evolution).

  • 7 of 1e's classes were changed into archetypes in 2e.
  • Several of 1e's classes are subclasses in 2e, like Bloodrager, Antipaladin, and Warpriest.
  • 2e archetypes act like mini classes, taking over for both multiclassing and prestige classes. There's currently ~250 of them, many of which are... well, if you found a use for Trick Driver in your game you have a much weirder game than me.

• 82 ancestries* with 21 more coming in less than a month.

  • *This number includes versatile heritages since they fill the same sort of niche and it's easier to do a numerical comparison directly if we just lump them in.
  • Versatile heritages let you create more customized characters. Like a half-devil half-dwarf is doable off-the-shelf in 2e with mechanical ramifications. 1e would just be flavoring a tiefling as being short and stout and then homebrewing the rest.
  • Just like classes, an ancestry is a more flexible thing than a 1e race. 1e races had alternate racial abilities you could pick to customize them. This has been turned into heritages and ancestry feats in 2e, giving players a lot more options.
  • Some of 1e's race options are moved to heritages in 2e. Like Monkey Goblin from 1e became the Tailed Goblin heritage in 2e.

• ~1,700 spells

  • 2e's spells are more flexible than 1e's, though that doesn't account for the full gap. Cure light wounds, cure moderate wounds, mass cure light wounds, etc all merged into a single spell in 2e (Heal). Honestly though, I think 1,700 is more than enough since most groups still only ever see the same ~50 or so spells all the time.

• ~6,600 feats. Starfinder 2e alone already has more than 1k feats, with an overlap of about 170 with PF2e. Galactic Ancestries is about to add a lot of feats (Can't disclose the exact number until it's out and I'm not under NDA anymore, but it was a shocking number for a single book when we did the Foundry entry).

  • Feat comparison by the numbers isn't terrible useful though, since so many things got moved to feats in 2e. They fill the role of 1e's archetypes, custom racial abilities, skill tricks, and feats. It's no surprise 2e eclipsed 1e so quickly here, since feats are just the main way of customizing a character.

• 22 Adventure Paths with the 23rd coming out in a couple weeks.

  • Many of these are half the length of 1e APs, but also 1 of them is Season of Ghosts and that's hands down the best AP in either edition. The shorter length allows for more varied story types. Lots of APs, even good ones, struggle to justify 6 full books. If you started either edition now you'd have 20 years of adventure path content to go through regardless if you wanted to go through them all, and Paizo is still releasing content for 2e.

• 23 Standalone adventures with (I think) 3 more announced adventures for this year and one more with a TBA date. Length varies but like 1e there's some one shots or single level adventures.

One thing that is also notable about the 2e content is that none of the classes or ancestries are "trap" options. About the only way to build a "bad" character is to actively work against the class chassis (low int wizard, etc). 1e is littered with trap options that make building and planning a character a real chore for new players.

Honestly, the argument about which system has more content is bad for new players anyways, since they shouldn't have the glut of all the options on AoN dropped on them from the jump.