Apple Fitness+ Overall Fail and Confusion

In a world of confusion over Fitness+. I don't have an Apple Watch and don't plan to get one. I want Fitness+ on my iPad but I can't even download the app - Apple support says its because I don't have a watch. But I downloaded Fitness+ on my iPhone without a watch and it works just fine?!?!

What I would like is to use the fitness app on a bigger screen (since the iPad didn't work). I can't even get to mirror the iPhone on iMac or through HDMI on a TV - the secondary screen goes black when the workout plays on the phone.

So I have every conceivable Apple device except a watch and I have the most expensive tier of Apple One subscription - but I can't use the fitness app in a meaningful way? Am I missing something? Is the roll out strategy for Fitness+ really that hair-brained that everything is held together by a $160 watch when I have thousands of dollars of Apple equipment that I can't use?