Actually supports internet radio, Spotify, Netflix, YouTube, TuneIn, and Disney+ with more coming via software updates.
Yes, there's no 3D view on the map, but that's not a massive deal to most people. And the routing is extremely advanced. It routes you to Superchargers at optimal points on the map so you don't run out of power, accounting for stalls that are currently occupied, closed, or broken. And it reroutes incredibly quickly. Just check out what happens when FSD beta 10 misses a turn.
You give no examples of how it's terrible. It's obviously design tested for vehicles... that's the one platform it's designed for. You're the first person I've met who actually enjoys the CarPlay UI. Most people think icons and such are too big and childish-looking.
Can CarPlay manage the climate controls? Can CarPlay allow you to control all your cars settings for handling, suspension, and performance? Can CarPlay give you your Autopilot visualization? CarPlay only started being able to route you to EV chargers last year, and it still doesn't have the live information about stall availability that Tesla's built-in system does.
I love Apple's products, but in no world is CarPlay better than Tesla's UI.