Wyze does not have an official stream access API. They implemented Amazon’s API that allows a camera to integrate with Alexa, and Amazon has set that up to ensure that no one else can use it. Roughly speaking, Wyze calls in to a specific server at Amazon, and that connection allows Amazon to ask for a pointer to the video stream when Alexa needs it. That stream is generated by sending video to the Wyze cloud, which puts the stream into the format that Amazon wants.
Doing it this way (as opposed to what tinycam is doing) costs Wyze money because it involves processing the video in the cloud. They probably aren’t going to want anyone else using it. I believe this is also why they limit the time for which you can view on Alexa. (I don’t have a device to test, but Wyze docs say it’s limited to 10 minutes of viewing time.