To use Alexa Routines, I do not believe a physical Amazon Echo device is required whatsoever.
You can download and install the Amazon Alexa mobile phone app, and log in with your Amazon.com credentials. You can then enable the Hubitat Skill from within the Alexa App on your phone, which will prompt you to log into your Hubitat account, which will then link both systems together.
You can try it now, before buying the Eufy doorbell, to verify Alexa Routines work.
