RPGMemes

And how often are you going to be climbing in combat, where it would matter that it takes them two and a half times as long to climb?

I think the reasoning is just that the features centaurs do get are basically completely useless to a normal wizard build

The fact that you can have a Tank with Mounted Combatant riding you is very useful to a normal wizard build.

I'd say the biggest downside is getting left behind when everyone moves at twice their pace for an hour. The guy you're carrying is riding you, so they can move double the distance for the first hour, but since you don't have a mount you can't keep up. Though in the 2024 version of the rules, it says "the group" has to have mounts, so I guess nobody can move fast and it's not as silly as in 2014.