In Australia, one only needs a certificate for subsidised pump supplies (once). That must be done by an endo, and the letter for a new pump must be done by an endo every 4-5 years. Other than that, GPs can do all scripts, thankfully. CGMS are funded personally, and Libre (my choice) doesn’t need a clinician to approve it.
I have had enormous issues with endos over the years, so only see one when it’s time for a new pump. My rheumatologist gives me blood forms for everything under the sun, and posts me my results. I have so much more trust in him than in any endo I’ve ever seen.
Endos are never satisfied. At my last visit I was told I was insulin resistant (on less than 30u a day with an HbA1c of 5.7), because I have a high BMI. I weigh a lot, but am very short, compact and strong. My body fat is not actually higher than most average sized women. I wear average sized clothing. FFS! I train hard 7-8 hours a week!
I wish endos would realise that their role is to assist, not alienate.