Afaik erythritol is a 0 on the glycemic index, basically no impact on blood sugar, so in that sense I’d say it’s better than maltodextrin. Do note erythritol has a slight “cool” after taste, i personaliy don’t mind it.
Remember that the dose is what matters. I’ll bet you that the maltodextrin is used as a filler, as it often is. Pure Stevie is too sweet and would lead to tiny amounts, maltodextrin helps carry it. But the amounts are probably so small it doesn’t matter. If you have 2tbsp of pure maltodextrin, that is like sugar. If you have 1/4tsp, it doesn’t really matter. Remember that just because something is on an ingredient label doesn’t mean it has a significant impact on your health, dose/amount is what matters.
Stevia is extremely potent, so that product is probably mostly maltodextrin. I would just treat it the same as pure maltodextrin when trying to calculate the calories (4 kcal per gram) or when considering the glycemic index.
Dr. Ekberg on Youtube had some thoughts on all the sweeteners in 2021… he did like the sugar alcohols, and he hates maltodextrin, if I remember. And he likes stevia and monk fruit.
I want to add that I think ten grams of inositol a day makes sense, and it really helps balance stevia’s taste, for me. I get it from bulk supplements. It’s thought to have some health benefits, and is considered a B vitamin by some.