There's the obviously vocal opposition to jumping providing WOW as their banner in their crusade against it. Obviously since Blizzard messed up how they did jumping, NO ONE can do it better. EVER.

There is the more reasonable bunch who don't see a reason for it because its a Final Fantasy. The inconvenience of constantly detouring around ankle and knee high obstacles appeals to them. It's at least a more reasonable a stance than the people who shout against it because of what another game did with it.

And then there are the outliers who don't like it just because for one reason or another.

The best suggestion I've seen for adding jumping by others:
A good animation.
Reasonable jump height. (no Mario jumps)
Delay between jumps (can't mash or bunny hop)

That said. Used to be Jump was an attack!