Agree to disagree. There are many usecases for Reddit. I rarely comment on Reddit but use it pretty often to find answers to technical questions. I've noticed many deleted posts and comments on Reddit in the past few months. I think it reduces the value of some posts. I would argue most of the posts I find valuable.
To me, there are other platforms and mediums that are suited to short lived conversation. I guess I don't get the need to delete the most mundane content but maybe I just don't get it.