It'd because D&D 5E was fundamentally broken, and so much of the rules are just hacky ways to solve it. Things like bonus action weren't designed well from the start, with them having to have a hacky "one spell per turn" rule, which can be avoided with certain methods, and things like that.

Pathfinder 2E has such a solid foundation that it doesn't need all the hacky crap to work, which makes it so much easier to understand. There's no bonus actions or anything, just three actions per turn that you handle everything from movement to combat, and anything else, with. It let's it be "more complex" while also being easier to understand.

Several friends and I are also being run through PF2e while using Foundry and it's been incredible. We've all casually played 5e in the past, but the learning curve for PF2e has been quick and short. And, like you said, much easier to find an answer to really specific or strange situations overall. Makes for a really solid experience as a player.

Our discord server has moved entirely to new systems and it's all better; CoC, DCC, PbtA, PF2e, SWADE, etc.