Which is fine, as long as there is some kind of sane defeat for originally street cars that might see the track.

Frankly it's also fine if there isn't. Taking street cars to the track is a tiny niche and Toyota needn't cater to it. Aftermarket modding is an option anyway.

No, it isn't fine, what you're seeing here is the push to use manufacturing infra to impose one group's will on another. Tools should be neutral.

We should empower people, not manipulate them through engineering usecases to/to not accommodate.

I feel empowered when I don't have to worry as much about how to safely operate my car, and it's just automatically safer. And when I don't have to worry as much about other drivers on public roads because their cars are automatically safer. The amount I'd be happy to pay to make that functionality configurable in order to accommodate people with different preferences, is $0.00.

If you're serious about racing you'll have an aftermarket ECU

That would depend on what kind of racing you do. I'm pretty sure Spec Miata requires you to run a stock ECU. And it's literally the most popular racing series on the planet.

The most modern iteration of Spec Miata (Spec MX-5) get an upgraded ECU:

https://www.mazdamotorsports.com/2019/02/07/a-better-faster-...

And Spec Miata is a pretty terrible example anyways... at the point where you're dumping 10k into a $500 motor I don't think you can talk about stock anything...