OK, so our disagreement is very simple: exploiting the flaws of a slot machine is not cheating in my book. Neither is counting cards now that I think of it.
The rules for slot machines are ostensibly very simple. As long as you're only pushing the buttons that are supposed to be pushed without deteriorating them, you are acting within the rules of the slot machine, and as such cannot cheat.
The presence of hidden rules such as "don't push the buttons in this particular order and timing", or "don't push the buttons in a way that reliably causes you to win", are just silly and unfair. Especially considering casinos are exploiting gamblers' minds in the first place. Don't like slot machine exploiters? Fix your slot machines.
Likewise for counting cards: the player is merely acting upon information naturally gathered buy observation and play. Asking players not to act upon such information is intrusive —and unheard of in competitive play. Don't like card counters? Invest in a continuous shuffling machine.