Noticed the same thing on the binocular shot, looks too polished for a couple of reasons, being the lack of blur just one of them.

Just a personal perception when I check and re-check the shot, it all looks too ordered to be real:

Symmetry of the AT-AT formation

Coordination when the machines move their legs

Frontal perspective, meaning that the binocular stands precisely in front of the middle AT-AT. This made the walkers look two-legged at some point, because the rear legs were hidden behind the front ones.

Position of the binoculars, not just by being right ahead of the walkers, but also how it's perfectly parallel to the ground the whole time, while in a more "real" movement the camera should start wrong, rotate a little (this doesn't happen in the original footage neither) until the position is right.

Blur when it zooms out.

However it is true that except for the blur and rotating tweaks that could be done with After Effects, the shot couldn't be tweaked to solve some of the perspective issues (IF ady considers them issues) without re-rendering the whole animation again, . I don't think it's justified at all, for the sequence as it is now is really an improvement opposed to what we had.