You sit back less in a high bar squat, but you do sit back. Personally when I was first learning to squat I was learning high bar and I wasn't sitting back enough. I've seen this in other beginners, too. It sounds like our anecdotal experiences don't match up and neither one of us has much more to go on, so we probably just won't agree. That's fine.

Personally, I'm all for WL shoes. I have some and I love them. But I also think it's important not to scare people away from trying the sport. If they think they need $100 specialty shoes to get started, they probably won't bother. Putting your heels on a plate or board is great to try it out but I'll admit it makes me cringe a little thinking about how unstable that must be. It's probably fine for someone just starting out with low weight though.

PS - In case it wasn't clear, I really like your post. I am nitpicking over minor quibbles here, but your main points are great. Thanks for writing it.