I disagree with your assessment that ascorbic acid is the active ingredient of vitamin c. And I think perhaps you are misunderstanding me to a degree.
I dont dissuade people from taking ascorbic acid if thats what they choose.. and Im also aware of ascorbic acid's cholesterol-clearing properties in the arteries. (Ive had my dad taking it for about 30 years now).. There are many studies showing many good things from ingesting ascorbic acid.. Ive taken many grams a day of it in the past.
However, none of that requires it to be real vitamin C.
If vitamin C curves scurvy and ascorbic acid cannot curve scurvy, then it makes sense that ascorbic acid is not vitamin C.
It is part of vitamin c. the outer vessel if you will.. but to rely on ascorbic acid exclusively to do the job of vitamin C i think is short-sighted. 20mgs of vitamin C in a white potato may be of much more benefit than 500mg of synthetically made ascorbic acid.
So by all means take ascorbic acid if you wish.. it wont hurt you, and it can help various conditions, of course if the benefits are a result of the acidity then any acid will do and not specifically ascorbic.