As a matter of curiosity, is it even possible to carry 10,000,000 Nook Miles Tickets in the first place? Suppose you maximized your storage and emptied all your pockets, then did the same with multiple player characters on a single island, and then littered your island (which has had all rivers, lakes, and waterfalls paved over to maximize space) and houses with all that couldn't fit into storage and pockets. I think that would probably still come up short of 10,000,000.
I ask because I don't think anyone who posts such an absurdly high quantity is actually expecting someone to fulfill their end of the bargain, so much as using the listing as a proverbial trophy case. Or, they could be expecting you to hack the game to get the requisite items, but if they're willing to go that far, then certainly they can just hack the game themselves and get whatever villager they want and have infinite bells and Nook Miles Tickets to boot.