The origin of the name is actually told in Lemmy's GitHub page, it's not just the Motorhead singer and Lemmings:
Why's it called Lemmy?
- Lead singer from Motörhead.
- The old school video game.
- The Koopa from Super Mario.
- The furry rodents.
So basically the name came from an amalgam of things the lead dev liked.
Did they? I was under the impression that the games you collect with Gold won't start if your subscription runs out similar to PS+.