“About 5% of large water-treatment facilities (serving more than 100,000 persons) in the United States use chlorine dioxide to treat drinking water. An estimated 12 million persons may be exposed in this way to chlorine dioxide and chlorite ions. “
https://www.atsdr.cdc.gov/phs/phs.asp?id=580&tid=108
Remember, hypochlorite is a chemical naturally found in all human granulocyte cells and is used to kill infectious microorganisms.
So the answer to whether chlorine dioxide can be used for health purposes is probably a yes.
You can decide for yourself, obviously. But most people who study the effects of the chemicals in drinking water agree that the chemicals in municipal drinking water are harmful.
Plus, the “treatment” dose of chorine dioxide is much higher than is permitted in municipal drinking water. I drink my own well water and if I am in a town or city and even smell the city water coming out of the faucet, I am amazed how disgusting it smells, especially the strong chlorine smell.
I guess you are determined to believe that chlorine dioxide is good for people, nothing more I can add.