I can see how the delivery of the message is not something a lot of people can swallow (the comments prove that), but all in all, I do think the message itself that one's sexual history is 100% their partner's business is something everyone should take to heart, not just because of the gazillion STDs some of which cannot be prevented via protection, but also because it speaks to one's character and provides context. Is it such a bad thing not to want to sleep with someone with a history of cheating for instance? And it's not even about "purity", but trustworthiness.