Just googling "jukin media patrick dexter" from my phone popped up a youtube channel of it with one video. I'd say he's legit enough but be cautious. Since the email is directly from jukinmedia, talk with him and watch who replies. Often scams will send back from differing emails without proper signoffs. In the bottom of the email, if he's a professional, should be a number. You can always ghost call and see how he or his answering machine answers.

In my opinion, sounds like a possible opportunity four your videos and you miss every shot you don't take.