Genuinely, this could be good marketing for the TV show that Amazon could do - would just have to make it clear somehow that Mr. House wasn’t involved in the show.

I mean he literally was in the show though, and seeing that the teaser for season 2 is literally New Vegas… Well, the current state of the NCR says that they probably didn’t win at Hoover dam. And the fact that there’s still lights on say that it’s probably not Caesar’s legion that won either.

Bethesda and the show runners themselves have said that Shady Sands destruction came only months after the war for the Dam which the NCR won. The show itself also mentions that Shady Sands was basically revenge for them winning the Hoover Dam. But we know not which faction nuked 'em. Enclave? Brotherhood? The Legion (which would be weird since they don’t use technology)? House? Possibly even Benny/Yes Man/player protagonist character.

Edit: Oh man… They could even write it as a gigantic joke; Shady Sands coincidentally was wiped off the map shortly after the events of NV by Fantastic when he accidentally activated the Archimedes II orbital cannon inside Helios One.

Unless I misunderstood the show, it was very directly stated that the overseer had nuked shady sands as an act of fuck you to his ex-wife

This needs a spoiler alert