But this Sinclair has made no allegations that Obama is gay or is still doing drugs, only that he was not fully forthcoming in his admission of drugs in his past. If he was smoking crack while serving in the Illinois legislature then that is significant.
I haven't watched the YouTube thing, but a number of articles posted here have stated that Sinclair alleges that he engaged in homosexual acts with Obama. IMHO no one free to choose would engage in homosexual acts unless they were at least partially gay.