Not sure if this is directed at me personally or just a broadside against more conservative DPMs.
But it is a fact that there is increased risk with high HgA1c. So yes, it's dicey. That doesn't mean never do it, you just weigh risks and benefits.
I like doing MIS bumpectomies and tendon releases because I just need the patient to heal a 5mm skin portal, and nothing needs to fuse no matter how much they ignore my instructions. I don't do your Charcot heroics; I send those pts to a certain elite podiatry residency in my metro, where the DPMs there have published on this and some were formerly on the ABFAS board. They have turned away patients of mine because of...high HgA1c.
PLUS, even if I wanted to, the anesthesia dept at my hospitals/surgery center won't allow me to schedule an elective case if the HgA1c is too high.