Totally disagree. Usenet is the only place recording the history of a huge number of influential projects from the 80s and 90s. That history deserves to be recorded.
Some of the most valuable and insightful anthropological artifacts are merely shop ledgers and discourse on bathroom walls -- and we've never been better equipped to document/store/search/access the entirety of the saved artifacts from the modern age -- and presumably our mastery over information technology as a domain will only improve and make things easier.
/r/DataHoarder disagrees. It's pretty crazy the what people will back up these days.
How interesting would it be to trace the evolution of e.g. TheDonald from parody to party to sewer, without the retrospective editings and deletions?
Yeah, there's a limit to storage, but it's growing faster than, perhaps, you warrant.
It's a pretty high bar to say that something should not be archived and it's a waste.
I am not even going to state my opinion on the issue now, I am just disappointed about the level of discourse comments like this create. No justification, no logic.
TL;DR is that you don't like reddit. This is not useful to anyone.