This is a showcase of a new glitch Rubicate found yesterday. It's done by using ctrl-enter to frame advance Flash (I'm just using words, I don't understand it exactly). In the world map this gives you a debug menu, which you can use like I showed to get infinite money. You can also grind xp and pretty strong items there. However, when you use ctrl-enter during a battle, it skips the battle instead, giving you story progression. This can be used to basically skip until the credits.

The question becomes: What do we allow, and where?

My personal opinion is that the infinite money glitch could be fine, but the credits warp probably isn't. We also quickly discussed on discord https://discord.gg/NjAGM4SA8m but since not everyone on this forum is in the discord, it might be a good idea to also mention it here.