Websites can do whatever they want if there's logic added to do it. I remember a few annoying personal homepages that would refuse to load using a particular br

Websites can do whatever they want if there's logic added to do it. I remember a few annoying personal homepages that would refuse to load using a particular browser. If you want to ban all Firefox users on Linux, you could add a middleware to your tech stack that checks for User-Agent. This is how many mobile redirection sites work. So then, by extension, if a particular company wants to mandate WEI, then that's their prerogative but I won't be a customer of theirs for long.