Exactly. As the doctors who put together the study suggest, age remains, by far, the highest risk factor in determining COVID outcomes. The average age of people with Type 1 Diabetes who, sadly, diesd was 72.
Also, mortality rates remain extremely low for the younger population. One might be 3 times more likely to die if has Type 1 diabetes and is under 40 compared to a healthy person, but the starting probability of actually dying are so low that the odds are still overwhelming in her/his favour.
There could be a case, however, to advice shielding for perhaps over 60s or 70s with Type 1 and maybe Type 2 diabetes. In all likelihoood, I think it will end up with a shielding recommendation for over 70s with diabetes, regardless of which Type.