Yeah that's a fair point. There is a line to be drawn somewhere, and most people don't run their own email server. Administering one on a rented server somewhere can be considered self-hosting your email (ahem, did I say server? I meant Cloud! Apologies)

Maybe what bothered me about the section I quoted, is that they're explicitly using the free tier and allegedly didn't give the hosting company (Oracle) any billing information. So they cannot possibly be paying for their use. It's sorta not really theirs but, instead, a charity from Oracle (there's three words I never thought I'd put together)