Why did they do all this work to make Google Hangouts incorporate SMS and Google Voice, then they create Google Messenger for SMS, which doesn't work with Hangouts, then they create a video chat that is separate from Hangouts that already has video chat...
So now we have Google Voice, which has stopped being developed (it appears?), Google Hangouts, which recommends you use Google Messenger for SMS, but still works (for the time being?) with Google Voice texts and its own data-based chat messages & video chatting, and now there is Google Duo for video chatting.
Why can't Google come up with a unified approach that brings in Hangouts with Google Voice & Phone SMS and video chatting? Why create all these separate apps that don't work with one another?