Maybe , but as I’ve settled into my dad bod, I’ve found that the bigger issue is a different shape, somewhat like women’s clothes. I definitely have more sympathy for them. It’s great that men usually only need to care about waist size and inseam size, but now the same waist size may be big or small depending on the rise, same with inseam. I definitely need to shop by brand that fits, and assume the numbered sizes are still actual measurements.

That being said, for lettered sizes, I’ve definitely turned to brands that are larger. I usually buy Carhardt t-shirts because I can wear an xL-T (and they have tall sizes!) when another brand is needed a 2x or 3x, then I’d go up a size if they don’t have tall.

For me the Costco question is easy: they never have tall sizes.