You said the metric system has tons of great subdivision which is objectively false. Prefixes in the metric system only multiply by 10, which by definition does not and cannot add additional sub-divisions. The point is that while the metric system is a useful system of measurement in very limited situations, the biggest advocates for it have no idea why they like it, and are ignorant of it's deficiency's.
Let's try to raise the discourse a bit. Divisors are absolutely the most important part of a human-centric numeric and unit system, and the metric system, being a base 10 system, absolutely sucks at that.