Hi everyone,
We're constantly working with the Amazon Alexa team to bring more features and to improve the experience, in fact, we're in the middle of launching
Alexa Groups with them right now. This does not include grouping Sonos players and Echo devices to play the same music at the same time, but it's a feature we've certainly heard requests asking for the functionality. I don't have any specifics I can share as to if multiroom music with Sonos and Alexa playing together will be available, but I'll make sure to let the team know continues to be requested.
I can't speak specifically to that chat, but if it was from a year ago, the Alexa integration has changed considerably since then (and as already pointed out, there were other mistakes/inaccuracies in it). As development continues, features are added and some may move lower on the list of priorities. We'll continue to bring new features and experiences to Alexa on Sonos and are hard at work to bring voice control to Sonos in many different ways, in order to bring the best possible music listening experience.