Healthline is usually fairly well balanced in its advice, and this piece seems to be quite informative.
As a T2D on oral meds, I follow a lowish carb diet, but I do eat potatoes because I used my meter in the early days to find out the portion size/ potato type etx that suited me. Anyone wanting to eat potatoes or other starchy foods should also eat to meter to work out their own personal tolerance levels.
One thing to remember is that it is generally the starch content that is our real enemy. A tuber or root veg is designd by nature to increase starch over its lifetime, so mature potatoes and ripe fruits have the worst sugar effect generally, I found that buying baby potatoes, or smsll salad potatoes are better for me than any form of mashed pot.
As regards the GI aspect of potatoes, a reasonably good substitute are sweet potatoes. They do not spike me as much as white pots, and I can have larger portions in my diet,
Potatoes are generally a no no for anyone wanting to follow any form of ultra low carb or keto diet. so it depends on what you are aiming for in terms of control regime (i,e, diet plan outcome).
My regime is more relaxed than many others in the Forum, and as a consequence I still use some medication to assist me, But it makes food choices a bit easier for me, anf it means that I can share my diet with other members of my family. Saves cooking 2 meals at the same time.