Difficult is not impossible. Yes. The chances are what? 1 in 10,000. But you can be #1 or #9,999. You just don’t know until the deed is done. Those are averages, that are meant to appease the masses. But you could be that 1 in 10,000. Does that really help that ONE person?

Yes, you are technically correct. It’s harder for the man to catch HIV from vaginal intercourse. Above you quoted a 1 in 900 chance.