It recently came out that 40% of covid deaths were diabetic https://www.upi.com/Health_News/2021/07/15/diabetes-high-risk-condition-death/2781626314320/
In relation to this news it was also reported recently that claimed that "Pandemic tied to spike in diabetes in children; type of immune response lasts months after Pfizer/BioNTech vaccine" https://au.finance.yahoo.com/news/covid-science-pandemic-tied-spike-191346381.html
Don't expect them to give you free donuts and enter you in million dollar lotteries for getting your free insulin though. People are dying we know, but they only get secret medicine for secret viruses.
It's not causal. Diabetics are not mote likely to be exposed or to get it, but when they get it, it will be more severe.