That can't be said for BCN, XDN, AEON, XMO and a few other CryptoNote coins being mined with ASICs or botnets since the PoW7 fork.

Difficulty spiked for all of them since. Literally through the roof.

The more logical reasoning is that the Anti-ASIC/botnet fork worked; check the pools, those bots and ASICs are still mining something... just not XMR . 🕵️

Also, consider your point in regards to XMV. The miners you sort after must come from somewhere,, and I'd bet most will be from XMR. If XMV or any of the other clones are successful; that will keep XMR difficulty down as well.

Cheers