I'm not seeing all of that verbosity and multi-room changes so far. If I say "switch the Hopper to CNN", it changes the hopper to CNN and responds almost instantly with "OK, switching to CNN on the Hopper". If I say "Switch Joey 2 to NBC", it switches Joey 2 to NBC and responds with "Switching to NBC on Joey 2." No cross effects on the other devices.
I suspect the difference is that I have applied Nicknames to each device in the Google Home app. Google will announce the convenient nickname that you give each device, instead of the original label.
The only oddity I'm getting today, is that it won't manage a channel number change. That was working yesterday. If I say" Switch the hopper to channel 5", it responds with "I'm sorry, there was an error and I'm unable to control your home device." I assume that's just a temporary mess up, but overall it's working great for me.