Jake just has a lot of things that are beyond his control that are working against him.
He can truly hit and get on base at an MLB level. No question.
He can also run the bases and play outfield at an MLB level. No question.
But in the analytics era, MLB outfield positions are not at a defensive premium, which means everyone is looking for big offense and power in those spots in the lineup, and there is a much larger sample size of players to choose from that fit those roles.
He’s also been screwed by the expanded roster sizes and platooning craze. His greatest and most rare asset - being a switch hitter - no longer matters anymore. 15 years ago when they had the dress roster capped at 25 players or whatever it was, he’d have tremendous value as an end of the bench PH and utility outfielder. But now, everyone has 1-2 big bats from each side that they can PH with, AND a defensive specialist who can probably also hit with some pop.
He’s never going to be able to throw right handed, which means he’ll never be able to play infield. And his physical traits are never going to put him in that 30-35 HR stratusphere, either. Those are the hard facts. He does everything else as well as you could expect any MLB every day player to do them.
The TLDR version: Analytics and the emphasis on role specialization has totally screwed over the old school players who are really good at a lot of different things, but not elite at any of them.