> pants are sized in inches

I wish! That number is kinda-sorta-related-to inches, but it's not, at least not anymore. I wear a 31 or 32 jean, but my waist is about 34.5 inches. And any jeans which fit my thighs properly (turns out to be about size 34) will fall off my waist.

Measure your own waist and pants, see what you find!

Sizing is chaos.

I assume you are talking jean sizes, which might be related to inches in some historical sense, but now it's more abstract.

However dress pants, sports pants and everything that isn't pants is just as bad as for women.