I sold my MK7 GTI back in Sept of last year and actually just picked up a '22 Corolla Hatchback as a daily, and already have a spot in line at a dealer for a Gorolla. I think the biggest problem with the Gorolla is actually the same problem the Golf / GTI/ R have.
When I bought my '17 GTI it was 22.5k OTD. At the time, a new Golf R was 37k MSRP and not prone to any discounts. Obviously the drivetrains are different, but you could get 80% of what the Golf R offers in a GTI for ~60% of the price. Not that anything about the Golf R was bad, but the GTI was a bargain for what it offered.
The same will be true about the Gorolla. I paid 22k for my '22 Hatchback. Unlike the GR Yaris which was a wild departure from the standard Yaris, the Gorolla will share a good bit of its body in white / interior components with the normal Corolla. Will the drivetrain alone / driving experience be good enough to justify 15k+ more than a base corolla, given that they essentially share the same bones? Here in the states the Corolla definitely sits in the economy car segment. And while economy cars have actually all gotten pretty good due to increased manufacturing capabilities and processes, the perception of a Gorolla essentially being a piped-up 20k car may not sit well with some people.
On the other hand, the Evo 8 was basically a 15k car with a 15k drivetrain and people loved that. So I hope I'm wrong and these sell like crazy