A few comments down threw some sense into the mix saying it sounds like astroturfing is at least playing some role, and someone linked a very interesting web archive link: Reddit admins accidentally reveal "Eglin Air Force base as the most “Reddit addicted city”, from 2013. (and here’s a link to the web archive page if the original reddit post goes missing)

I found this paper that a Redditor said was funded by Eglin which shows how to influence conversations online and control majority opinion, but keep in mind I haven’t read the paper nor looked any deeper into the authors so take it with a grain of salt, unless you wanna look further.

Edit: apparently the official explanation is that Eglin is where military VPN traffic goes through, so everyone browsing Reddit on military networks does through Eglin. Kinda sus but seems reasonable imo