No, I don't think he did admit to what he's being accused of. He did admit to "having sex on his mind when he bought his drugs" which is different from admitting to raping someone.
Back in my college days I had sex on my mind every time I offered to buy a drink for a cute girl... or even when asking one to dance. That in no way means that I ever intended to rape anyone... but I certainly had sex on my mind.
from Wikipedia:
In July 2015, court records from Andrea Constand’s 2005 civil lawsuit against Cosby were unsealed and released to the public. In his testimony, Cosby admitted to casual sex, involving use of Quaaludes, with a series of young women, including an admission that his use of drugs in the 1970s was illegal.
“casual sex”??? While using a pill that is a sedative, hypnotic? Back in your college days, did you try to deaden your sensibilities when after a cute girl? Cosby was out to deaden THEIR sensibilities.
Now for the purists here, why would Cosby be automatically believed, and fifty women would not?