TEs that are legitimate receiving threats tend to take a Safety away from providing double coverage or deep coverage which opens up the field for the WRs. While the number production might not be as high, they allow the receivers to get deep and get chunks of yards.
Which is why it's so important that Bowers is also a credible inline blocker. If all he could do is split out they would just play more DBs to cover him. But the ability to be an inline blocker in the run game means that it helps you get defenses in more base sets and get more mis-matches for Bowers or other players.