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.
Refused done tons to significantly influence the way post-hardcore has been in the last 10 or so years. The things I can't stand about modern post-hardcore include the clean choruses, the melodrama, the annoying vocalists. Honestly, Refused has many traits that make modern post-hardcore bad, but they delivered in a reserved and calculated execution that makes them leagues about their followers.
But enough about them, I have I feeling that they were so present on Fake History, but the clean choruses remind me of a lot of post hardcore bands actually. Mostly scenecore bands, which go without saying, but this band also reminds me of Second Head Automatica, but then I haven't listened to that band in ages.
I've given this a lot of time, actually. A lot more than I usually give bands I don't like on the first listen, and I like it less and less. Because each time, the flaws/things I don't like about it
(lol) - the production, the vocals, the monotony - become more and more apparent to me.