It's a very specific flavor of film not to everyone's taste, for sure. Someone has to be in the mood for a film where the main character makes a series of bad decisions that loop back on him and plunge him deeper and deeper into trouble. They also have to like loose films with an almost verité quality to them, as in, you never once feel like you are watching something filmed on a set. From a filmmaking perspective, some of the things they did in Uncut Gems was jaw-dropping. They crammed so many extras into scenes that it really felt they took Sandler and randomly had him go through certain areas while in character, it felt so natural. The Safdie style is very much like Cassavettes, and that also is an acquired taste. For people who like cutty films with a lot of camera angles and a lot of quick edits that heighten the viewer's awareness (closeups, whip pans, overheads, etc.) or any shots that really scream out "look at my camera technique", they are not going to like Safdie films at all. I work in film, so seeing movies where the seams are hidden and feeling rhythms that aren't predictable really score high with me. Uncut Gems more so than Good Time. I felt a lot of times in Good Time that Pattinson was "acting", and it didn't have the seamless quality of Uncut.
Also, I have never been a fan of Adam Sandler and I had openly laughed when people suggested he could act. Then I saw Uncut Gems, and I humbly beg forgiveness. Sandler was brilliant and he was 100% totally robbed of the Oscar that year.
I just hated every character in it and so had zero interest in what happened to them and stopped watching.