No I didn’t mean they advertise they would always be compatible with my phone. They say they offer a free service.
You can still access the free service, you simply need the right device.
A Google search returned this:
"Yes, iOS 16 is still usable for basic daily tasks in 2026, but it is increasingly outdated and losing compatibility with modern apps"
The opposite view would be to ask why Apple doesn't ensure their OS remains compatible with modern apps. Presumably you purchased the Apple product? Your beef should be with Apple for failing to keep the product you purchased up to date.
A quick look on the Strava website shows the app requires iOS 17 to operate on an iPhone. Your data is still available in other ways:
"If your device is no longer supported, you can still access Strava at strava.com from any browser or by logging in to your account on a compatible device. Your data, activities, and connections will all be there."