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If you are openly declaring the rules of the game(terms and conditions) beforehand, this is not cheating. Players can examine them, and decide whether they want to play on the site. No pitfalls will be left for someone who read the ToS carefully(talking about honest gambling sites here, of course). Cheaters do not disclose their methods beforehand, and that's the difference. There's nothing to admire in their actions. Cheating is bad.
That's just cheating with extra steps, the problem with our notion of cheating is that it has to be illegal, if you know how the system works or you created the system, you can find or create some loopholes that will not be a problem for you if it ever comes to that. ToS is a pitfall, if you do not accept it then you can't play at their website. I know that cheating is bad but give credit where credit is due.