Most of the support staff is their customers and users actually.
It's not users that process refund request, recover your account if e.g. you've lost your 2FA method, or any of the other innumerable things you might need to contact Steam support for. I don't think it's unreasonable to include the staff that do this as part of their workforce.
Clojure, a simple grammar but most of the vocabulary is imported from another language.