To me it seems he doesn't like spending time with toddlers. It's a big jump from here to conclude that he doesn't want to be a parent. Toddlerhood is just a temporary state.

He literally said he cares more about things than people and his parental leave was a nightmare. To me it seems he just hates toddlers more than other people.

But even if what you say is true I'd still say he doesn't want to be a parent. You don't pick and choose with parenthood.

Many new parents always go through some depression when their first kid is just born, the life changes are drastic and sacrifices have to be made. My wife got hit with more of this than me, so I took a couple of years off of work to take care of our (then) baby so she could go back to work earlier (she just moved to the USA and was unemployed, and I just got laid off from YCR, so we got to make a choice). Always got to look out for the mental health of your partner, and judging isn’t very useful.