I just don't really understand how you don't see the distinction lol. During a game, assuming no one on base and the pitcher not tipping his pitches, the catcher is putting down signs under his crotch, no one but the pitcher is supposed to be seeing that. It's a significant competitive advantage for the hitters to know what every pitch being thrown is, that's why everyone makes a huge deal when a pitcher is tipping pitches because they usually tend to get shelled as a result. There is a big difference between a coach studying game tape to see if the pitcher/catcher have any tells and the use of instantaneous technology to communicate to the dugout and subsequently hitters what pitch is coming next.
Half the battle for hitters is guessing which pitch will be thrown next. If you can figure that out because the pitcher lowers his elbow prior to a curve then good for the hitters to pick up on it, and shame on the pitcher. I think there's a line between being clever and straight up cheating in a way which is against the integrity of the game, the competitive chess game between hitter and battery. The Astros, and seemingly any other team employing live technology to relay pitches, are on the wrong side of the line, and I think they should be punished for it.