Considering it's during when he kept getting blamed even by Japanese, I'd say so. Of course, you don't have to take my word, nothing is absolute. Just this messy production leaves a lot to be desired. >Can I have more? I have not heard anything about it. Thank you in advance.
Yuichi Tanaka is not participating as the usual CAD in this. He is only credited for Character Design and near airing of Index III's start, he said he's only done chara design for it and zero genga. The has not been a fixed one for Index III and the one managing some of the episodes is a complete newcomer AFAIK, there was also a rumor prior to airing some months before that there was no CAD for Index III and they were scrounging to find one, some Animator who was requested made vague complaints about it.
On top of that, I think there was another rumor a month of something before airing that had some anonymous post from a guy from JC Staff that they had cut a ton of BR and apologized in nipland. I don't know if that was true, but Index III has had quite the negative/bad rumor mill before airing.