What is preventing iOS from automatically detecting and tracking biking / cycling activity?

iOS 16 added Fitness app and activity which makes sense and was overdue. iOS long did a great job tracking and showing steps in health activity.

But even in 2022 iOS is unable to automatically detect and track cycling activity and I am really wondering why that is. The moving speed on a bike should be trivial to distinguish from walking or driving with car or public transport.

Apparently a third-party app is needed to track cycling activity. This is surprising and since users are then at the mercy of some third-party app maker TOS and have to trust, their data is secure. I would much prefer Apple Health being able to track cycling activity.

What is keeping Apple from allowing users to track cycling with Apple Health onboard software?