Creating a new platform has a characteristic quality curve.

At the beginning, when you go to write some userland code, it's 100% likely that you'll run into a show-stopping bug.

At the beginning, that show-stopping bug might take 3 months of effort in the platform to fix.

Over time it shifts from an expected 3 months to 3 weeks to 3 days to 3 hours.

Then, it shifts from 100% likelihood of a show-stopping bug to 50%, to 25%.

This is the progression of new platforms.