Also surprised that there wasn't more of an inventory of any gaming related programs on the computers; multiple windows to play card games would be a good explanation for two computers - why haul around two laptops to do a couple basic searches?
As for your theory - not being Paddock? Yeah, right. Law enforcement (including evidence techs and related) plus near minimum wage paid resort security employees would keep such a secret for what reason? They'd blast out any such coverup in seconds.
Not alone - that can hold much more water in my opinion, but none of the evidence seems to indicate that and again, there's enough underpaid drones who'd love a million dollar payday from some news organization to blast out who the accomplice was.
Neither of which would be prevented or countered by child porn which, honestly, aside from this report, I've not heard a lick about before.
Threat of arrest, ruination, etcetera.