So, not sure how the DQ thing works, but I was able to rate it anyway?
Regardless, in case no one's told you yet, here's something really important you should know: the copyright act you cited in-game isn't relevant in the slightest. This game falls under the category of derivative work, which is only fair use if it's transformative in a way that either qualifies as criticism of the original (parody) or renders it irrelevant to any of the original markets. The mere existence of Holo-Indie disqualifies this as fair use.
The reason this game is not copyright-infringing is because of Cover Corp's explicit allowance, as long their guidelines are followed. That last part is important, as part of copyright is the right to authorize derivative works.