Yeah the change from Son of the Morning to Children of Fire was definitely substantial, but I think it's fair to say that this single, at least, sounds quite similar in its tonality to a song like "Hush Yael". I'm not saying that's negative, but that's probably what that guy meant about them "continuing the same standard."
In general the range of songs that Oh, Sleeper produces is really refreshing compared to the rest of the genre, so someone who thinks that they just put out the same thing over and over must not have listened very carefully to their releases. I mean they can melt your face with sweet-picking melodies, clean vocals that are easily comparable to Dustin from Thrice, and really creative breakdowns that don't feel formulaic but completely naturally & compelling -- all while telling an epic story with a positive twist. And they can pull it off live... they've got my vote!
I need to hear the rest of this EP to see how I really feel about it, but thus far I enjoy what I hear -- after all it's just an EP, which don't generally make huge leaps in tonal progression. If the rest of the songs sound akin to Children of Fire, then treat this release as a bunch of Japanese Bonus Tracks and quit whining haha. I'm sure if they -- like Thrice before them -- start to explore their more melodic side, we'd have people complaining about that too. Sometimes people seem to forget to just take the music at face value.
Anyways, it'll be interesting to see what their next LP sounds like--