Again, I would not consider it flight. I would consider it a jumping kick. I am happy with the label flying side kick, as above, a paper aeroplane or a brick can be described as flying but not as "having achieved flight". If someone said to you "there's a new scientific discovery this year, people can fly and I can demonstrate it...watch..." and then did a flying side kick would you be incredulous/amazed that they are correct people can now fly, or dismiss at as "that's a flying side kick, you aren't really flying".
that's different than what you said before, which was this:
I would say for him to truly achieve flight, he would have to generate self-propelled lift in the way that a bird, bat, aeroplane or helicopter can leave the ground under their own force/power.
Flying side kick does fit that definition. No one said how long or how high you have to go before it's "flying".
But over and above that, I would say that the "this is my narrow definition and anything that doesn't fit inside it is a no go" type of approach is ok, in the beginning parts of the journey, but not when you get farther down the road. In that sort of territory, uncharted and on your own, the approach of the pioneers has been "where there is a will, there is a way", and they found ways to make it happen, as opposed to listening to all the people who told them that they could not. That is why I used that particular phrase, because it so fits the attitude and perspective of the pioneers. they took ten kicks and ten strikes and turned that into the most popular martial art in the world and an Olympic sport to boot. How many people do you think were against them back then? How many are still against them?
To take a more current situation, there are so many people out there that say USAT is done, that the debt load is insurmountable, that our pipeline is busted, people have been burned, are not coming back and are telling others not to come back, that it won't and can't fly, and so on and so forth. Does that mean we shouldn't try to figure out a way to make it fly?
This was, like so many things I put out there, a test. But unlike most tests we are familiar with, we grade ourselves. That's why I answered the way I did, leaving enough holes in my posts so that if someone were so inclined, they could go for those holes. But the secret is not in finding the holes, but figuring out a way to make it happen, in spite of the holes. Make it happen. There are enough people saying it can't be done. Do you really wish to be associated with them?
I always do everything for a reason.