Unfortunately, the post mostly covers the lack of monotonicity in UUID <= 5 and only acknowledges at its end and only briefly that both UUID and GUID actually have versions that solve for exactly that. Leaving us with the post’s other, unexplored, complaint that UUIDs and GUIDs are "huge" and "take up a lot of space".
Any good writing out there on considerations vis-a-vis PK column size in current RDBMs or monotonic UUID versions 6-8 as PKs?