There’s an excellent style available through userstyles that might make the experience more bearable. If you have some technical skill and time, you could make one that looks and behaves as old.reddit. I expect something like that will appear soon there as I hear more and more complaints about the UI.
In programming community it’s a well-known issue. Mostly because programmers often use reddit, but also because of the API discussions. A popular programming YouTuber - Fireship did a video on the topic.