Thank you for your opinion.

As stated in the article:

    ... and may lead to diabetes.

'May' is a qualifying word and that sentence is immediately followed by:

    Additionally, diabetes risk factors may have been exacerbated during the COVID-19 pandemic including ...

(Which I think most people would interpret as "nothing is entirely certain thus far, it appears to be a complex multifactor kind of thing".)

FWiW I addressed the title and the article's primary focus, Type-2 diabetes, and linked to detailed comparative factor breakdowns for Type-2 diabetes.