I came to a decision on swaphopping.

Let's assume we decide to call it a glitch. The thing that enables the glitch to be performed is the fact that the game considers you standing on ground for an instant after swapping to human form in midair. This would mean every time you did so, you'd be performing part of the glitch. Not to mention, this is something that could easily be accidentally done in casual play.

So no, I'm not going to consider swaphopping a glitch.

I don't think shop warping is a wrong warp. It has to do with the hitbox for accessing the shop and the hitbox for activating the shop's save point being two different hitboxes.

Just restating, even if El Infierno isn't by definition a glitch, it just feels like it shouldn't be in a glitchless run.

And swap hopping I'm still on the fence on. It really just sits right on that line between exploiting an oversight and glitch

Going through all the tricks I'm aware of that exist -Select Door Glitch is, obviously, a glitch.

-Shop Warping I would not consider a glitch, that's using the mechanics of the shop points and abusing their odd hitboxes.

-Swap Hopping is... tricky. Pardon me while I sort this while typing. You have to consider how it's even able to be done. After swapping back to human form while in the air, you are considered on the ground for an instant, which lets you jump mid-air. So that's not really a glitch, it's exploiting the way swapping was programmed

-Wall-hopping same story. You're using the properties of the walljump ability to do it. Plus the devs even knew about it when they released the game.

-El Infierno is also tricky. I'm curious how the route would look with and without it honestly. I'm not sure I can call it a glitch outright, but it would just feel wrong if you used that in a "glitchless" run. Using a trick to instantly get all abilities just feels like a glitch, regardless of semantics.

-Bubble Warping is obviously a glitch. Not that anyone is doing any runs with that anyway.