All of the above makes you exactly the person this review is aimed at. Like I said, there's a definite learning curve to this record, and my review's goal is to provide the roadmap past the barriers to entry, so you can enjoy the songs.
That said, I'm not exactly sure what kind of post-hardcore would please you. You say the record has "everything [you] hate about modern posthardcore," then claim they're constantly ripping off Refused and Glassjaw...which isn't modern posthardcore. Those seem to be conflicting thoughts. And I really can't name a modern posthardcore band I'd compare Letlive to - would you mind naming a few? Curious who out there compares.
Also, I think it's incredibly tough for The Blackest Beautiful to be your first exposure to Letlive. Fake History is more straightforward with better production - it's a much easier first listen.
Probably a bit pedantic by now, but they vaguely remind me of Envy on the Coast. I'd agree though, Fake History is a far better intro to letlive, but I wouldn't quite say that any letlive record is immediately accessible. Fantastic record though.
Goddamn, what a great year for music.