The Yaris does promise a lot, albeit not technically inside the arbitrary 33k price set, without omitting the obligatory circuit pack. But even if it weren't, what are you advocating? Toyota should have put a turbo in the 86, so it can compete better with their own Yaris? Right now they're two totally different offerings, at quite different price points. Why would they place them both in the one slot?
More broadly speaking there's a case that literally every single NA car in the world should be FI, but not all are. It can't be because all car manufacturers are too stupid to figure out boost = faster for same displacement. There must be other reasons, beyond being able to talk about 0-62 / quarter miles / bhp / torque / other pub chat metrics, for selecting different aspiration types on different cars.