There's a hint it was used at Dell in some capacity 6 years ago, judging by this comment https://www.reddit.com/r/haskell/comments/5gyrdv/what_is_war... The thread discusses "warp-tls" which is a webserver extension that uses that "tls" package as a dependency for TLS support.

Ok but this is surely not compelling evidence of literally anything. Perhaps, in fact, the opposite. This is what we have for evidence and nothing more then WHY???

There is something here, at least one thing, that seems to be dominating outcomes, and is not being discussed.

Nobody has even a half-suggestion of what it might be and that is not making it (or them) go away as problems that are not being solved.