Is the online spread of "don't eat fried dough sticks and buns" credible?

There is an online article: "Don't eat foods such as fried dough sticks, steamed bread, etc.

If the food contains aluminum, it is possible that the food additive alum has been added

According to national food safety standards, alum can be used as a leavening agent or stabilizer in bean products, batters, fried noodles, shrimp flakes, baked foods, and jellyfish

Can you still eat fritters with alum? According to the assessment of an international authoritative organization, the allowable intake of aluminum per kilogram of body weight per person per week is 2 mg (milligrams)

According to the national food safety standards, alum (potassium aluminum sulfate or ammonium aluminum sulfate) can be used in appropriate amounts for bean products, batter, fried noodles, shrimp flakes, and baked foods.

However, soy milk fritters are a common breakfast for some people.

An article on the Internet wrote about the method of judging whether you tiao steamed buns have excessive aluminum, saying that “you tiao was bought home and found that it was “slim a circle”, and it was hard to bite, sticky, and very tough.

"Especially soft steamed bread may contain aluminum", "Vitamin C can react with aluminum to promote its excretion", these claims are also unfounded

(Author: Ma Guansheng, School of Public Health, Peking University)