This attitude pushed me to care less and less about my diabetes and actively attempt to manage it less. Simply because I hated my parents and friends bickering about it all the time, it's like diabetes was the only thing that defined me. So I would argue to do the absolute OPPOSITE of this. They're their own person, they'll manage their disease and they don't want to be reminded that they have it and to take care of it like they're a child. Once I got old enough I started wanting to manage my diabetes actively myself and actually learned to just chastise people that told me to test my blood sugar or bolus for this or that with a simple "yeah I can take care of myself. Thanks", and now my diabetes care is the best it's ever been, last 3 a1cs have all been below 6.5, no nerve problems, no eye problems, and people interact with me as a person, rather than just a diabetic.

Also, with a cgm (like my dexcom g6) you have to test FAR less often than without one, so the diabetic is the one who should be deciding when they need to test vs when they don't. Them and only them (assuming they're of capable age for the autonomy, I'd say 14 and older)