To elaborate on this, there is a third aspect being glossed over: the correctness of the animation itself.
They could alter the animation such that feet don't slide across the ground and keep responsive movement. The result would be a worse quality animation, because the movement of the legs would not appear to be pushing the rest of the body around. Instead, it would look more like the feet are following the rest of the body retroactively, while holding onto the ground.
A good example of this is Factorio's spidertron. When the spidertron moves, the legs follow with a walking motion that perfectly tracks the ground below. In this case, it's a great-looking tradeoff, probably because there are so many legs, and not much animation done to the body itself.
As mentioned in other comments, I think a big thing is the difference between the older way of doing it ie you have a character object that you move along a vector and the animation is supplementary to this to make it look like they're walking, vs animating the walk and then having the animation/movement of the character itself actually move the character through the world (which almost nobody seems to do).
The third option is inverse kinematics: you move the world across the character, and the character reacts by moving its feet to positions that make sense.
Oh yeah for sure, but I'm thinking more for the realism of the simulation, we don't move like that irl so it would make sense to simulate roughly how we do when it comes to games.
I guess it's all trade offs at the end of the day, dev effort vs game style vs priorities.
They could alter the animation such that feet don't slide across the ground and keep responsive movement. The result would be a worse quality animation, because the movement of the legs would not appear to be pushing the rest of the body around. Instead, it would look more like the feet are following the rest of the body retroactively, while holding onto the ground.
A good example of this is Factorio's spidertron. When the spidertron moves, the legs follow with a walking motion that perfectly tracks the ground below. In this case, it's a great-looking tradeoff, probably because there are so many legs, and not much animation done to the body itself.