I do not think you can say that. Specially in the light of the statistics.
Getting CORVID-19 infection killed 0.4% of healthy people under 50
Getting CORVID-19 infection killed 9.2% of people that had diabetes.
Problem with those stats is that there are no age adjusted statistics of the diabetes patients. I tried to apply the curve of healthy people's age distribution curve to it and I got something like 4.6% for under 50 with diabetes. So I guess under 40 might be half of that, or not, I guess like 2.3% vs 0.2% of healthy.
So I GUESSED!! that it might be something like 11-times more deadly for diabetes. With error margin on 100%

Then "diabetes" is a quite large and broad spectrum. And I would guess age distribution of diabetes paties does not exactly match the normal population trend , specially given that the T2 much rarer the youger population.
So I GUESS CORVID-10 is about 10-times worse for us But then again everything is. Even the normal flu, I think, is in average about 10 times more deadly to us.
Strange thing was the having multiple of the risk conditions did not see add up risk that much. Average I think was 13% as where any of the two risk factors percentages alone would sum up to average or 18%. So having multiple conditions does not worsen chances that much.
Still Diabetes based on pure statistics seem to be the second most highest rick factor with CORVID-19.