Since chess.com ranks similar players against each other, and I'm not planning on tournament play at all, I actually wouldn't care in the slightest if I played someone who was consistently cheating. That would mean I'm playing a hybrid human/computer instead of a pure human, but I'd still be playing someone with a consistent ranking and it would still in some sense be a fair fight.

I would be upset if someone was inconsistently cheating, and so I'm playing someone nominally at 1400 but for this game they're actually playing 2100.

Of course for true tournament play, the rules are the rules, whatever they may be, and they must be followed for it to have any meaning.