Holy shit, that's actually hilarious, I imagine someone would have noticed when their paste/auto type password managers didn't work
For those confused, this sounds like instead of making a real website, they spin up a vm, embed a remote desktop tool into their website and have you login through chrome running on their VM, this is sooooo sketch it, its unreal anyone would use this in a public product.
Imagine if to sign into facebook from an app, you had to go to someone else's computer, login and save your credentials on their PC, would that be a good idea?
if you're in the know, check out vlmcsd on github and "test" windows enterprise with KMS. It can run on everything from a pi, to docker, to openwrt. If you're really gangster, you can set up SRV records and get auto activation on your lan