I'm with you, I don't see how their new logo conveys how people "interact with Google products across many different platforms, apps and devices-sometimes all in a single day" any more or less than the old one did. It's a logo. It says "Google." Nothing about the old logo or the new one infers usage from a desktop PC, a phone, a tablet, or anything else, and they could have added the new microphone icon and whatever else without changing the logo. It's their brand to play with, but the justification doesn't make sense, they could have just said "we thought we needed a crisp new look."