The only thing that should be taught about preventing the spread of HIV/AIDS is that nothing can guarantee that it won't be contracted and spread except the use of condoms and/or sex with only one long-term partner. Anything else is completely irresponsible, and encourages irresponsible behavior.

The only reason someone would get circumcised for the purpose of preventing HIV/AIDS would be if they intended to have unprotected sex with multiple partners. Otherwise they would have zero risk of contracting HIV/AIDS through sexual contact. If you suggest that they get circumcised for that purpose, you are encouraging them to have unprotected sex with multiple partners (otherwise circumcision for that reason would be irrelevant).

That's just stupid. You and Wolfgang really ought to know better than that.