How would you skip the cutscenes? If by a mod-it probably won't happen, since its no longer Final Fantasy X anymore. It's a rom hack at that point. But if you can convince Cereth, then gg to you.

There is a mod that drastically speeds up cutscenes which might interest you for your own playthroughs, but as DTG said, mods are banned and so running the game without cutscenes isn't possible right now, sorry!

As I always say though, you can always do speedruns in your own way (with the mod) and everything, it just means your times won't be uploaded to the leaderboards. If you really want to run the game, it might be worth considering doing something like this and then just occasionally doing runs without the mod when you've improved a lot.

absolutely. Enjoy the run.