I can't speak for other brands, but I started this project by digging into the LCD menu of my camera, discovering "auth", "user", "pass" and wanted to know what protocol they used to authenticate remote logins. That's when I discovered the camera just uses ssh-style auth. As a part time sysadmin, it gave me the idea to try to "log into" the camera and here we are.

This doesn't actually use ssh at all right? By ssh-style auth you just mean a username and password? Seems to work great for the intended use case regardless !