You're onto something. This should be a chart though, and encompass the whole scope of Google's attempts at messaging over the years. Plot out all the bundling (Hangouts & G+) and unbundling (Allo's features -> Messages) like xkcd's movie narrative charts: https://xkcd.com/657/
At any given moment in time, Google's messaging attempts look silly and confusing, but imagine seeing it over time - it'd look downright insane.
Yeah, there's clarity at the end, but there could have been a cartoon in 4 frames:
Frame 1: icons of Allo, Duo, Hangouts, Messaging
Frame 2: Hangouts splits into Meet and Chat (5 things)
Frame 3: Duo, Messaging, Meet annd Chat arranged in a 2x2 grid of (messaging, phone/video) x (consumer, business), with Allo still hanging above
Frame 4: Allo getting squeezed into Messaging.