Nobody is claiming that bleach is useful in similar applications.
Au contraire!
Sodium hypochlorite is available globally at exceptionally low cost as household bleach in concentrations of 5%-6%.... Sodium hypochlorite has been used as an antiseptic agent in dentistry for more than a century and remains a widely used root canal irrigant at concentrations ranging from 1.0%-5.25%..... The American Dental Association Council on Dental Therapeutics has designated dilute sodium hypochlorite a "mild antiseptics mouth rinse" and suggested its use for direct application to mucous membranes.