It's a health issue, not a rights issue.
This whole thing hinges onthe assumption that we know all there is to know about AIDS and have 100% fool-proof tests to detect AIDS.
Personally, I doubt either of these are true.
In such case, I prefer that they err on the side of caution and contiue to exclude the two groups that have the highest incidence of AIDS (gays and IV drug users), thereby increasing the odds of getting pure blood. By not continuing to do so, you increase the odds of people getting it.
To use civil rights as a bludgeon to increase the risk of people conracting AIDS is simply wrong and I hope the legal system sees this.
And, this is not to be misconstrued as an indictment of either lifestyle. It's simply a pragmatic analysis of the situation.