Earlier, Devil May Cry creator Hideki Kamiya didn't exactly have kind words for Ninja Gaiden. They weren't mean per se, they just weren't kind. Kamiya said he's "not interested" in NG so perhaps you could say he is indifferent. In the same issue of EGM, former Team Ninja lead ninja Tomonobu Itagaki has this to say about Kamiya and his game Okami:
My daughter tried playing Okami, and she got sick of it pretty quickly-and I got pretty sick of it, too. And I'm not out to make this an Okami bashing session or anything — I'm just saying that it didn't feel like it had much of a spirit. It's unique, but it's not a powerful fighter plane... So I heard Kamiya said something about the action genre not moving forward in eight years. Can you tell me more about that?
Apparently, Kamiya said the action genre hasn't moved forward since the release of the first Devil May Cry. To which Itagaki replied: