I don't click on shorts, so removing them from the UI improves the recommendation feed for me. My recommendations are mostly good educational content, but shorts are never interesting.
For some others, shorts are too much of a temptation. You can find a lot of comments even on HN from people admitting that short-form video content on any platform (YouTube, Instagram, TikTok) can pull them into a time warp where they've wasted more time than they wanted to spend on videos. I suppose there are some people who can manage long-form YouTube use but struggle with shorts, but I suspect a better solution for people with self-control challenges is to disable recommendations completely (which will also make YT shorts disappear)