It's probably one of those things that doesn't matter much if you do a few swings per week. But if you're doing 500-700 swings per week and using a heavy weight,
Intensity and Volume
There is an inverse relationship between intensity and volume.
See Saw Analogy
Intensity (heavy loads) are on one end of the See Saw, volume (lower load) on the other side of the See Saw.
Thus, performing 500 to 700 heavy swings a week is contraindicated for the development of Strength and/or Power.
Secondly, I never recommended 500 to 700 Kettlebell Swings a week. 500 to 700 Kettlebell Swings a week makes little sense, no matter the load.
it probably matters a lot more to do it at optimum angles that don't irritate or wear on the joints.
"It probably..."
means that you are uncertain, you don't know if it will "Irritate or wear on the joints". You are guessing, which is never good.
I provide some inside and recommendation on this in previous post. What your anyone else decide to do with it is up to you.
With that said, I understand that in anything new, you first need to learn "The Rules" to gain knowledge and experience.
Once you do that, you then need to learn when you can "Break The Rules".
Good luck with you lifting.
Kenny Croxdale