Are state machines used for gameplay logic Fortnite or previous titles made by Epic?

Never tried Eco but none of the other paragon character are set up correctly.
Nor are any of the unreal official tutorials.

And yes, we were talking about state machines for animation - I’m about 90% certain this topic was in the animation sub section when I first replied?

Here’s a link on some elaboration you asked for.

As far as other types of state machines go.
Technically, isn’t every BP it’s own state machine?

You also have BhaviorTree and BlackBoard for AI which is closer to a finite state machine.
Completely different subject.
Actually one of the better ones of the engine in terms of ease of setup - however also prone to bad use situations / you really need to know them to do things correctly via setting up tasks that don’t cripple gameplay.