This is what chariots have sounded like since 2007, with the exception of griever (which is, in my honest opinion, the only good release they have, the rest was all rather messy and mediocre). I do not quite understand why it comes as such a surprise that they sound harsh and unpolished, and it is almost as if a lot of people are impervious to the fact that they have been around for this long already (and this particular lineup has also been a steady formation for a while too), but perhaps it is simply because they were never as successful as Phantasmagoria or 凛 and stayed somewhat under the radar.
Either way, I am glad Riku is still around and that fans seem to be re-discovering him, even though chariots isn't something I would prefer over his projects together with Kisaki. It sounds a lot rougher and rawer and simply isn't my thing, and takes a long time to grow on me.