I don't have a problem using OpenSSH, really. But I'm not going to use a Microsoft terminal emulator, unless it has some advantage over the terminal emulator I've been using for decades, when the Microsoft product has no advantage other than Microsoft included it with the OS so I can save a 3.5 MB download. Same reason I don't use Internet Explorer / Edge / new Edge or Windows Media Player. On a level playing field, I would never use those products (well that's not true, IE 3 was ok when it came out, IE 4 and 6 were good when they were new, but I don't have a time machine), so why use them because the field is unlevel.