Spotify's way of handling is completely terrible and i am very tempted to cancel. I have a bunch of Echo's around my house and the Spotify family plan which i share with my wife . My wife can't play music on our the Amazon Echo if i am using Spotify elsewhere on my phone, or laptop because of the one account one stream rule Spotify implements..

You can't create fake accounts for your Echo's, they actually make an effort to verify you actually exist with some identity database. All to prevent a legitimate customer from being able to use their service.