I partially agree. It is certainly true, obviously, that some men (and some women) are going to use a hug to “take liberties” as you say. Yes, that happens, and not infrequently. However, they also take liberties when simply looking at a person as well. There is a limit to the extent a person is required to go to avoid others taking said liberties. For instance, it is not necessary for me to wear a burqa even though me not wearing a burqa will inevitably result in some men taking liberties when they look at me. The same goes with chaste, friendly hugs, especially where this is the typical and culturally expected greeting and between friends (whether or not both spouses are friends). Now, obviously when someone takes liberty via a hug it is worse than simply taking liberties via a look, so one should take a little more care about this, but that doesn’t mean that it is wrong to for one person to hug a friend of theirs, even if this friend does not know the person’s spouse.
I think that is actually the main reason the OP comes across so badly. He thinks so poorly of his wife that he would not even be ok with his wife chastely and briefly hugging a good friend of hers if he personally did not know this friend. That, in my opinion, crosses the line. I can understand being wary of hugs from complete strangers and mere aquintances, but to have the opinion that your wife is not even allowed to hug a close friend of hers unless and until you personally check him out and five her the ok sounds more than a little condescending and controlling. The OP should absolutely talk to his wife about his concerns, and she, in turn ought absolutely to take them very seriously. But the OP needs to start thinking about his wife more as a person in her right rather than as property to be controlled. And yes, I realize that my words are quite possibly too harsh, and, if they are unnecessarily harsh I do apologize for that, but I believe they are appropriate for the impression the OP’s posts have given off. If I am incorrect in my perception of the OP I am more than willing to recant and apologize for my strong language. But trust me when I say that if my fiance ever talked to or about me in the way the OP has we would be having a very serious conversation about whether or not I am willing to actually marry someone with such an attitude towards me. I will not be looked on as property and neither should any other person.