It is hype indeed, but doesn't fit the atmosphere of the show. You could put this song for any random anime and it would sound pretty okay, but without bringing any reflexion to the show, unlike "Haru wa Yuku" or even "from the edge", and just like "Oath Sign" which completely destroyed the mood of Fate/Zero...
I don't disagree with this. Gurenge isn't that fit to the show. That's why I said that it's good and famous 'as an anisong from LiSA', not as a good OP that really matches a great show or sth. like that. (good is very subjective. Don't worry about that ^+++^. All of us have different piles of good songs and bad songs.)
I should clarify and correct about how I think the popularity of anime&manga helps. I don't follow LiSA's work so I don't know about her promotion. However, it's just my 'guess' that KnY helps this song more popular, not only from LiSA herself.
I heard about the song broke many records digitally sold quite late. But after I check the timeline carefully, it's before the time that the show got more attention from public. So I should give the credit for her.
However, in Thailand at least, people around me who aren't very into anisongs or animations know Gurenge because it's HnY's OP, not as LiSA's song. That's why I thought that the popularity of HnY plays some role here.
In my point of view, HnY became more popular around early fall last year, that made people pay attention to the manga, and it helped the manga became a talk of the town by being the first manga in a decade that can beat One Piece in annual sale. That's quite a big deal for manga reader society. So, when Homura released, HnY movie that it features was already a centre of attention. Plus the fact that Gurenge, which is also LiSA's song for HnY, is famous, I think it isn't surprised that Homura is destined to get a good sale, no matter you think it's good or bad. And I bet that 99.99% of the listener don't know and don't care about the composer =____=".