You can Spoof almost anything. Spoofing is like everyone is wearing a Hat. U got a blue hat, but now u wanna be seen as Red Hat guy. So u spoof ur Hat so everyone u sees u gets the info u have a red Hat. So all that a spoofer does is giving everyone (Game Servers) another answere from the fact. Every Win OS for example generates an SID, if u want to change that u can simply reinstall ur OS, but since most of the stuff is somewhere written done in the regestry or in some other dark and hard to reach corner in ur OS a spoofer just simple goes there and writes smth. new. But only temporarly. Almost every spoof is gone after a restart. Some games ban ur Username, others ur IP and others give u a HWID ban, some like EFT just do that for the Storage the game was on.
tldr: A Spoofer just changes stuff that was written down by ur OS or some other Programm. It has no affect on ur Hardware. (So no warranty Issue)