I think part of his point is that the focus on it being a chop (in training) is focusing on a minority usage. I suspect this is true, and that it was viewed differently in pre-WWII Aikido.I'm not disagreeing with what you are saying but I'm not sure we are looking at same thing in terms of that chop. Just over all, I don't discard Jow Ga techniques because of the quote below.
I understand this is you personally, so in return what I'm saying is just my perspective.
Here's what I see.
What you are presenting are "ways that it can be used" which I don't disagree with. But I don't want to get far from the Chopping motion or the reaction to the chopping motion. The frequency that a technique is done is of minor concern. Tornado kicks aren't that frequently done in MMA but they have been done. A chop may be similar. It's not the common thing, but a thing. Like that tool in the tool box that you only use every 2 or 3 years.
- People drilling a chop not a entry. In this case an entry would be more linear and less hammer like. I understand the entry part because I've used it in sparring and it didn't have a hammering feel to it.
- People drilling to flow with a chopping motion not an entry motion.
What you have written is what I would say to student to help them see beyond that a single technique. Instead of thinking "that's all there is" they would learn to see things that can it can be used for. For me. I'm just focusing on that 1 technique and that 1 reaction to it. Unfortunately, I'm at a huge disadvantage because I don't train Aikido and I'm currently not in a position where I can test this against a variety of chopping like attacks and entries that are actually used.
My biggest hang up is the idea of training of flow against a movement that doesn't exist in fighting. That doesn't make sense to me. I can't learn the flow of swimming by training the flow of running, because the running movement doesn't exist in swimming. So to train flow on an attack or movement that doesn't exist is difficult for me to understand the logic of.