BB spent too many years neglecting the offense (in terms of high draft picks) to start spending on a position that was already filled with a talent like Gronk. If you start in 2007, and go up to, but don't include last year's (2018) draft, which gets you to the last 2 years that you mention, the number of offense v. defense, in terms of picks in the top 2 rounds is
Offense: 5
Defense: 18
And one of those picks on offense was JAG.
So, between need and available talent, the team had a lot of immediate, and known, holes to fill. At that point, it became a matter of numbers, availability, and positional priorities. If they'd gotten the TE instead of Wynn, there'd be a panic about the OT position.