That is dumb as hell unless it was leverage for more money. You can still be with one team, you just have an opportunity to bail out and make more money if the team that you've never played for until now turns out to suck. 13 years ago the highest salary in baseball was $21m (ARod) and in 2018 Trout (who was technically still in his final arb year of service time) made $34m. Kershaw made $35. So a $14m rise highest paid player in 13 seasons. We can't assume a rise will be linear, but I would guess he's not even among the 20 highest paid players in a few years. This year if you include his signing bonus, he's only 7th, and that $30m number will drop to $26 for most of the remainder of the deal, which would be tied for 13th highest in 2019. Among players making ~$26m this year: Jon Lester, Jake Arrieta, Felix Hernandez, pre-extension Aranado, Jordan Zimmerman. If he's producing MVP numbers and seeing worse players make more, he's going to be pretty pissed that there is no opt out.