Earlier quoted context omitted.
I would say you are being unnecessarily pedantic: the GP said "anything wrong", and the original comment obviously believes that there is "something wrong" which makes the choice not "sufficiently tasteful/professional/anodyne" (/me looking up "anodyne"). The obvious positive reading of the GP comment is that they disagree anime characters make it not "sufficiently tasteful/professional/anodyne".
You are replying to the GP.
You seem to be unnecessarily pedantic too, while being wrong at the same time (I would get those relationships wrong sometimes if I thought it was clear enough).