Isn't this copyright infringement?

The FAQ says "MKBSD accesses publicly available media through the Panels app's own API. It doesn't do anything shady or illegal.", but I don't think that logically follows. Just because something doesn't have DRM, doesn't make copying it not piracy. There are plenty of PC games with no DRM but you still aren't licensed to use them without buying.

Like, it's not as if I could care less about a bottom line of an already rich YouTuber, but is this really the hill to die on, especially with legal risk?