I suspect the people who don't 'get' him are mainly those that just give up partway through the post, rather than perform the bit of mental Rubik's Cube shuffling that's required to catch his drift. It's good exercise!!
That I know exactly who 'Master Walnut' and 'Alan-Zorro' are, purely from the context, is a testament to the subtle, skillful, intricate assembly of those brief paragraphs.
I bet you any money that Chris Morris, particularly his Blue Jam-era intros and monologues, was a significant influence on this smart fellow's writing style. And, of course, Stanley Unwin, Lewis Carroll et al. He clearly has more exotic influences, but this is an art form quite peculiar to English.
Sabu Pundit is a national treasure, and perhaps the single greatest achievement of the British Raj. Deep joy.