^ 100% this. The show is an absolute dumpster fire. There are the basic casting issues, character changes, plot deviations, condensed storytelling, visual representations, and so-on. Fans EXPECTED these. Still as BAD as these make the show feel to fans, nothing compares to the 3 major sins the show commits:
1. Tone and Atmosphere - The world-building / themes / depth / detail that is so loved in the books really make the show feel "unalive" by comparison. The closest I can describe it is as if the visual direction was decided by people who heard about the books 3rd or 4th hand. Gone are beloved locations that feel real... places that conjure instant mental imagery. Places like Caemlyn, Andor, Cairhien, Falme, Tear, Tar Valon, Far Madding. If they exist in the show, they just feel like a set, unalive and unimportant. Gone is the struggle between light and shadow. Gone are the concepts of fate and free will. Gone is the struggle of power and the burden of leadership. All replaced with what? Nothing of substance, so why was the decision to remove them made?
2. Character development doesn't exist anymore - The books were so full of character development that every chapter had something to look forward to. Coming of Age of the central characters of Emond's Field played a huge role, buried by the show. Evolution through Adversity, especially for Rand wielding an immense burden is gone; leaving Rand look uninteresting and mostly unlikeable by the viewer. The interpersonal relationships are all "off" so badly, they give literal cringe vibes while watching. Friendships, romances, rivalries... they are all wrong every last one of them. There are no self-discovery and identity anymore... instead of quests, grappling with identities and destines, we are given exposition dumps and lazy "it just works that way" style story telling. This deep and dynamic developments are the reason the book series resonates so profoundly with its readers. It is the reason the show so profoundly misses the mark.
3. The broken lore - The rich and detailed mythology that Robert Jordan created carried the book series. The show goes beyond simplifying or overlook these elements, it directly attacks that lore. It is everywhere you look... the Dragon vrs. The Dragon Reborn. Lews Therin Telamon. Artur Hawkwing... The Heroes of the Horn. Someshta, the Green Man, the blight... its all just a slap in the face. It's almost as if the show was written as differently as possible from the books so that WoT fans would be upset with it rather than just say it was "average." Perhaps, "unwatchable bad" was what they were going for.