Its meaning is a bit complicated, but in context it was likely meant as a polite way of saying "no" by trying to give you a compliment. It means, "while I don't agree with everything you are saying, I will grant that you have demonstrated a good quality" or said another way, "I like something of what you said, but not necessarily the rest of it." In this context, he likes that you are direct, but still does not want to do the video call.

When you joked that "that was perfect for a video call", You are implying that you wanted to see him naked. That was obvious. You were not "beating around the bush" (this means to NOT be direct. In other words "to beat around the bush" Means that you really do want to see him naked but you will not say that.You would make small talk or say other things but not explain exactly what you want). So in other words, when he said "you are direct" He means that you said exactly what you want and there is no guessing or playing games. The phrase "I'll give you that" is just affirming that you are being direct. So to say "you are direct, I'll give you that" means that you may not be perfect or you may have other faults, but you are very direct. It is not a major deal is sort of like confirming what he already said. It is usually used as sort of a small complement.

Below are good answers. I'll give them that.

In this context it means: Your male friend is saying yes you are very direct. "'i'll give you that" = you believe that what someone says is true or partially true. "he's a hard worker i'll give him that" = yes he is a hard worker i'll credit it him with that attribute. so it basically means, the person saying it is giving you credit or agreeing that something is true.