These two issues are orthogonal.Yes. You're right. I've ceded control to Apple to help me fight for increased privacy, and to combat data mining. If Apple has control, it's because I, and others, have chosen to trust Apple with that level of control for reasons that are important to us.
So, your charge that it's about "control" is spot on, and exactly why I've chosen to spend my money with Apple.
Should Apple be required to remove it's T2 chip? No. Should a third party app store have carte blanche access to your device? No.
Don't obfuscate the issue.