I'd guess a lot of the 67% are not college position players. South American prospects, high school draftees, pitching phenoms. Still, 67% isn't a whole lot more than half. Still a lot of talent that doesn't make it (almost half). Think of all the minor leagues teams in every major league team's farm systems. That is a lot of players trying to get the call up. I wonder how many of the 67% stay in the majors for an extended amount of time and how many of them reach multi-million dollar contracts as they develop? Position players. Tyler is fast and teams love speed, so that gives him an advantage. He hit .122 in 2017(20 strikeouts in 49 at bats) and .296 in 2018 (56 strikeouts in 189 at bats). Hitting a major league fastball (let alone slider) isn't an easy thing to do.
If he is a first round NFL pick and is successful as a QB he could put himself in a position to have a larger paycheck. If he isn't a top pick then I'd agree that he should go with baseball. Over time (longevity) I'd also go with baseball. I'm just saying that if he goes high in the draft as an NFL QB, he will make an NFL team and get his shot to be a star (not a gimme for MLB draft picks). Worked well for Russell for choosing football.