What is really questionable about the show are the wigs/hairstyles. I know that is the lore but it looks so weird and unnatural. Matt Smith, from the trailers, is kind of wonky looking too.
I think the grimdark tone is a major misstep. It is common in many shows besides this one. I recall Westworld Season 2 as having a similar tone as the latter seasons of GOT (both made by HBO). The Netflix Witcher has also that problem, when both the books and games have that special humor in the background.