after reading the mastering section in the Glossary docs (and the Wikipedia article linked therein), I believe speed changes are not in the realm of mastering. also, I feel there’s more artist intent involved with sped up/slowed mixes than with (re-)mastering. (not necessarily the original artist’s intent, mind you)
see also the Know Your Meme and Wikipedia entries for Nightcore, which both call this type of recording both an “edit” and a “remix”.
either way, there’s different AcoustIDs and ISRCs* between these sped up versions, so that is data that might be lost/muddled.
*at least, in the case of a random sample I pulled up, Lights: (original and remix)