It’s not a dichotomy, but an observation about how data privacy tends to work in the real world. You can easily refute it with practical examples of how openness has actually improved privacy for the average user relative to Apple’s closed, managed privacy programs. Would an average non-technical Apple user be exposed to higher or lower security and privacy risk if they moved from Apple platforms to open platforms?
It is a dichotomy though as its confusing correlation with causation.
There is no causal relationship between open platforms and being bad for privacy. Look at bluesky vs facebook.
Just because android failed in some ways doesnt mean apples way is better. Its a duopoly. There are open source alternatives focused on privacy...with very low user bases.