This smacks of Jack moderating the comments again, on a contest video no less. He’s only going to publish the ones he approves of, which is a dumb and almost sinister way to go about approaching a giveaway (he told people to subscribe and leave a comment with their location).
PL: Usually running a contest or giveaway leads to some sort of conversion on a website (aka the contest landing page). The contest should have a goal in mind: whether it be to increase sales or lead generation, collect emails or drive engagement. The fact that Jack is doing this outside of his website is pretty dumb and going to be difficult to police. He could have setup rafflecopter or something similar and forced people to like and subscribe to his social media channels driving engagement (usually doing this gives you more chances to win in the contest as well). Also, I’ve heard that a one time giveaway out of the blue doesn’t do much for engagement, you’d be better off doing a free printable (such as a recipe or even a guide to TN restaurants) or something and collecting emails for a newsletter where you can hawk your wares.
TL;DR: Jack is dumb and can’t handle a giveaway much less his own website/blog.