Could you even call it "working" for video games, based on the result, for the same kind of reasons you'd say it doesn't work for those other media?

(To qualify the rest of this, clearly it's job done in terms of the author wanting to make something memorable for their nephew - it's quality uncling, with the best of intents - but in the context of how what's been shared is going to contribute to the discourse around AI, in the shadow of a new model release, during an ongoing pre-IPO hype bubble...)

I'm seeing something which has has the surface-level features of a belt scrolling beat 'em up, but it's missing the result of all the different types of work that would normally happen through "make it actually interesting and enjoyable to play" design and iteration, e.g. you can walk through every stage unchallenged mashing punch, there's no evidence from the 2 stages I played of an interesting mix of enemy types with unique AI which can combine in ways which add challenge and variety to a belt scroller, you can stand and basic punch the first boss to death stepping aside only for its AOE attacks, the second boss infinitely spams a running move when it reaches low health and sometimes bumps into the edge of the screen behind it.

_Something_ was one-shotted, sure, but what we expect of a belt scrolling beat 'em up that someone cared enough to finish and release wasn't, not that people who will point at this in the near future as evidence of "OMG new Fable can one-shot games" will care.