I think the main complaints from most people are that the pacing is a bit hard to watch. I know the original manga was fast paced and a little goofy, I read quite a bit of it back when I got super into gits years ago, a far cry from the slow and cerebral movie adaptations, but I think I had hoped this more direct and true adaptation would find the middle ground.

I'm enjoying it, but it's hard to watch, i'm nearly 40 and have always preferred "slower" media, and some shows can be either fast or slow paced and an episode is over in what feels like 5 minutes, regardless of how much or how little has actually happened, but this one is often a bit of a slog, never quite getting me into that flow state in a lot of episodes.

I doubt it's the last GITS adaptation we get though, I love when we get different interpretations of a source material whether every one is better than the last is irrelevant.