Tested K&A at scale, found something, need your help

[oshfdk]

This is how abbreviation systems work: special markers for word boundaries and structural positions, separate from the content characters. That's one of the reasons the Tironian shorthand model fits — Tironian notes use dedicated strokes for positional modification of base signs.

But this is not a particularly strong argument? If two things have a common feature, this doesn't mean they are the same thing. It's a bit like saying "a giraffe is yellow and has spots, so giraffes are leopards". The statistics regarding paragraph initial characters have been well known for decades, Tironian notes have been researched in the context of the Voynich Manuscript many times, I think successfully linking both requires a valid model that would explain how exactly this notation works.