While Messages and RCS is how Google wants you to message friends, Google Chat also fits that role and the company today reminded us...
tl;dr: after pushing rcs so hard for years, killing hangouts well after forgetting about it, & hiding it from gmail, google now wants you to use its (and google allo's) successor, google chat.
Why is it written with collectivist speak? "..reminds us..? Who is the "us"? The collectivist phrasing is disturbing as opposed to using objective terms.