Hi Maggie - it's frustrating because the time this man takes to talk nonsense, is less time we have to train. You are absolutely right about Ukemi. When I train with sempai, I never complain...They generally know what kind of falls I'm better at, or worse at. They don't try to hurt me and I respect their bodies as well. It's always the new students who come in rough and rugged and full of bravado...I did too, when I first started. I didn't know any better and I got offended if someone tried to tell me. It wasn't until I trained regularly and seriously that I began to understand what people tried to tell me. Thankfully, they were gracious to me and accepted my apologies when I presented them.
Honestly, all the injuries I've withstood in Aikido was from low kyu ranks.