MDM is the absolute deal breaker. No way in hell will I ever make my Macbook into an unsellable brick if they so decide to lock my computer with MDM.

Even moreso, not for pennies/month

They can never have supervised permissions on your device unless your mac was wiped and registered in Apple Business Manager. As a BYOD, it cannot be locked.

Whether it makes sense to enroll a mac as a BYOD is another question.

The MDM profile doesn’t grant that

You mean ads. Don't sugarcoat it. They are ads. Not tips. Ads.

My goodness... Is nothing sacred anymore?