Didn't realise it was autoimmune. Nevertheless, in his case it was directly caused by Covid attacking the pancreas. That said, he got it in 2020. The virus got milder over successive generations. (Intrinsically and due to broader vaccination and antiviral administration.)
There's actually a couple different "types" of Type 1 Diabetes. For example, you can get it during pregnancy (Gestational Diabetes), etc. So it doesn't surprise me that it's possible to get it from Covid. I seem to recall someone getting it from an injury that damaged the Pancreas enough to prevent it from generating insulin. I don't know if that still "counts" as Type 1; but it certainly has the same effects.
