Sure his targets will go up. But so will Josh Downs, Tyler Warren, and Deion Burks will get a lot of those Pittman targets, I like Pierce, I had him on one of my teams last year. He was very useful, but that was when he was basically free. I'd be careful overpaying for a big play receiver in a run first offense...
I think it was more in reference to the fact that Tate was rarely if ever mocked to the Titans at 4. It was always Reece, Bailey, Love or Styles in that spot. So when Tate was picked at 4 it was a surprise, albeit not a big one...