Ok, so for what it's worth, here's my assumption from what I know of the man:

Kano will aggregate your dust payouts until they cross the non-dust payout threshold, then pay you. Pandering to anything below that would be "ridiculous, unsustainable marketing hoo-ha" if my spidey-sense is correct.

I suggest that you do not succumb to your knee-jerk reactions of "scam". Kano is direct and concise, even prickly at times, not to be mistaken for "incorrect", "unreasonable" or "scammy". Kano is always precise (to a fractional satoshi in my experience), and overtly so.