Wikipedia isn't an appropriate place for Bash quotes because Wikipedia is an encyclopedia about broad concepts. Also, Wikipedia as a policy is not a primary source.
Wikiquotes could be appropriate. Submitting a dump of the entire database to Archive.org could be appropriate. (For example, Archive.org hosts user-submitted dumps of things like product manuals, old TV shows, old computer games.)
Considering the quotes have an unknown, and almost certainly not public domain or CC BY-SA license[1], they wouldn't be appropriate for any Wikimedia project.
[1] And even if submitting required licensing the contribution under some Wikimedia-friendly license, considering each person included in a quote would also have to agree to such a license... and I have a feeling bloodninja wasn't following up their conversations with "would you mind sending me a signed release of the above six (6) messages under a Creative Commons Attribution-ShareAlike license version 3.0?"
Backed up on centralized gitlab and centralized archive.org, huh?
My point is that the comment was praising independent services when it doesn't make sense: bash.org, the independent service, shutting down and people want to store backups in a more trustworthy centralized service, much like the two backups you linked.
