Sort of, although Pom is at least a century older as Seppo was coined during world war 2. It comes from the rhyming slang Yank to Septic Tank to Seppo.
It came from the swagger of the US service men in Aus during the war and the implication that many of them are full of shit.
I honestly doubt it. I don’t think it is possible for reddit to be profitable in anything like its current form.
Twitter, before the EM implosion, had managed one profitable year in the last decade.
Reddit has about 2 orders of magnitude less users than twitter.
Those users are much less attractive to advertisers because reddit knows fuck all about them compared to twitter.
Reddit surfed through the years of cheap vc money but going public could kill it.