I want them to win too or make games competitive but in the long run losing can lead to winning. Not every team is the Dodgers, you need maximize your contention windows (peaks) and your losing years (valleys). And in one way, you maximize your contention windows by losing to obtain a higher draft pick. With a strong draft coming up, in a losing season, why not cheer for more losing if it helps you win by potentially grabbing a franchise player.
I will never cheer for more losing, but getting a higher draft pick is a nice consolation prize that makes losses a little less painful.
If the Jays roster was full of scrubs right now, I would be happy to see them lose a bunch of games. But, at this point, pretty much everyone (outside of the bullpen) is fighting for playing time next year. Winning a bunch of games based on their play is a lot more valuable than a few spots in the draft.
I guess the best case scenario for the future is probably that the rotation does well, the offense performs, the young guys take a step or two forward towards establishing themselves... and the scrubs in the bullpen who are gone in the offseason anyway keep blowing games so they get a better pick.