0:00 type 1 0:06 type 2 0:12 type 3 0:18 type 4 0:24 type 5 0:30 type 6 0:34 type 7 0:39 type 8 0:44 type 9 0:50 type 10 0:56 type 11 1:03 type 12 1:16 type 13 1:23 type 14 1:26 type 15 1:30 type 16 1:33 type 17 1:38 type 18 1:50 type 19 1:56 type 20 2:03 type 21 2:09 type 22 2:14 type 23 2:21 type 24 2:26 type 25 2:32 type 26 2:39 type 27 2:46 type 28 2:53 type 29 2:59 type 30 3:05 legendary 1
2:46 this skin is a reference to death battle Gojo vs Makima I think. Since he has the same bloodstreak on his face, body wounds, and leg missing near the end of the animated fight.
It's not the animation, it's the choreography and sound effects. Every one of the animations are good it just may be other parts of the cut scenes that may be lacking. Like art direction for the faces or an awkward absence of sound, or a weird cut. So yeah it can be multiple factors.
i think from the jump festa jjk panel where the anime’s voice actors live read off unanimated scenes from the current manga. they did this with the Enchain and 200% hollow purple scenes too. either that, or they used AI, or paid a voice actor