"Pro hac vice" representation is where a lawyer from outside the jurisdiction to practice within the jurisdiction, for the duration of one specific case. This has not yet been applied at all in your case, since no lawsuit has been filed yet.
He has not claimed that he has been granted this status in your case; he has claimed that he has been granted this status in a case in the state of Florida.
I cannot read his mind as to his intent, but it appears that you asked him where he is licensed, and he has responded with "Texas", and then answered the inherent follow up question of "How does a Texas lawyer propose to practice law in Florida" with his statement of his current admittance to the Florida bar on a pro hac vice basis. He then (correctly, in my opinion) clarifies that said admittance does not constitute being licensed in Florida. Thus, he does not appear to be attempting to "bamboozle" (wonderful word) you, but rather to answer your inquiry.
The inclusion of the fact may or may not be relevant, since I haven't seen the whole conversation (I am assuming you didn't initiate contact with this particular lawyer at random by asking where he was licensed, but rather there was some preceding back and forth). However, I cannot easily see a situation in which it would be illegal or unethical to mention his current standing in Florida. You could ask him to name the case in Florida in which he has been granted pro hac vice bar admission, but I don't see the benefit, but I'm not sure he would be obligated to respond.