Playing chess, online, agaisnt another person, and then analysing that, along with chess.com doing things in the background- news, videos, massage sent to you- is A LOT of work.
I doubt they have "hacked" your device.
You haven't even provided a shadow of proof.
More seriously, there is no reason whatsoever why chess.com would run an engine on your iPad in real time. It's got all your moves archived anyway and it can review them at leisure. You just aren't that important to be spied on every second during chess.
You claim that it is, so it's on you to prove it.
Basic logic doesn't apply because you're a customer?
What exactly did you figure out?
If you play poorly, you are paired with a lower rated player, whereas if you play well you are paired with a higher rated player, more times than not
That's how ratings work. If you score well you get paired with stronger opposition. Hardly deserving of any credit.
If chess.com had to respond to every unfounded claim made on the forums they would need to hire a hundred people to work full time.
I watch the processes running on my device. No engine shows up while I'm playing, and the web browser doesn't suddenly start eating CPU while I'm playing.
Additionally, running an engine on various devices, many of them with fairly slow processors, would be a pretty inefficient method of cheat detection.
Because then we would know FOR SURE that we would be caught if cheating.
Otherwise people don't- so some immature people cheat.
They wouldn't if they knew they would be caught.
The logic of your arguments is...
Non existent.