The response I have seen from the writing blogs has been damn near universal condemnation. (makingitupasigo.com)
It is not universal condemnation though — the issue appears to be that those who don't rate him have a problem with those that stick up for him. (justarsenal.com)
However, looking at the comments on all the stories about it in the football media, it is clear that as well as almost universal condemnation of Costa and his antics (apart from the Chelsea fans of courser) there is a very real sense that Arsenal would not have won the game anyway and that this is just more evidence of the problems at the club. (justarsenal.com)