> 'But Cisco did it too!' is just whataboutism.

A whataboutism that makes a legitimate point. It isn't reasonable to dismiss something just because a person makes a comparison. It's valid to consider that Apple might have been applying inconsistent standards and unfairly targeting Zoom for some reason.

I doubt they were being unfair but it is a bad practice to dismiss an argument because someone has the temerity to expect consistent standards. The threat of Apple arbitrarily removing apps based on unreliable reasoning is concerning.