Yes, they are not in the resting position on the home row, but they are close enough for a command you will be executing often. Crating a key-map is an optimization problem between memorability and ergonomics.

Vim command layout is not perfect, the worst offender in my opinion is $ (move cursor to the end of the line), which is commonly needed, but somewhat hard to reach.

HOWEVER - when you start to use an surviving piece of still used old software, a bit of humility goes a long way. Not because software or designers were necessarily better in the past, but the reason that the software is still in use is probably because there are some benefits to it. So learn the defaults first, modify later when you understand them.