I have no affiliation with Wyze, but keep in mind that not everyone that uses Wyze also uses Google platform. (Alexa, apple). Even then, many Google users may only have speakers and no Chromecast or hub/display. So by opening up the beta to those who signed up through the survey makes sure that the participants are (1) interested (2) engaged in the process (3) have compatible equipment, and (4) expressly agree to only discuss within the beta area of forum/FB. They only had capability to a limited number of participants through Google, so makes complete sense to get the most out of it. Sorry you didn’t get in, but don’t blame Wyze. They’re working on making it available for all.