That looks like a lot of work and fairly uncomfortable to do for a prolonged period of time.
I split my kindling with a small ax standing upright at my chopping block, it's endurable enough so that I can do it for quite a while at a time.
First session this week
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Second session this week
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Stacked into crates for storage
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I do understand that Your kindling requirements may be fairly higher than mine are!
If I'd require as much kindling I'd tinker up a muti-split wedge attachment for any splitter I may have (I don't own one!), and I would look into being able to process kindling standing upright.