>none of the men he had sex with could consent either LEGALLY.

AFAIK, when it came to prohibited sex acts between adults (which, btw, usually included PLENTY of breeder sex acts like cunnilingus, fellatio and anal sex, among others) BOTH (or SEVERAL) of the ppl involved could be charged criminally w/o regard for whether any of them gave consent. lack of consent was not an element to most sodomy charges. so if 2 men are found having fellatio in their bedroom at home they could BOTH be charged w/violation of a sodomy statute. someone might also be charged w/a sexual assault depending on the nature of the criminal complaint.

whereas if a man is found having fellatio w/a minor in his bedroom only he can be charged w/sexual assault - b/c the law says the minor can't consent and lack of consent is an element in one of the charges the state would bring. of course, before Lawrence v Texas that adult man might also be charged w/some form of sodomy depending on the jurisdiction.