Reddit is worse because of its size, resulting in problems with spam/low effort posts and comments.
This smaller size is a bit of a double-edged sword though. If I want to discuss cooking/chef knives with people, for example, there isn't a niche community specifically for that topic.
Maybe in this way it's best for people to head outside of Lemmy to other forums for more specific interests, and Lemmy can be more tech/general discussion oriented.