Not sure if this is sarcasm or not. But I would specifically say it's not that hard to show someone a different way of logging in, which is why I find the other reactions of shock so weird. I work with one system where I log in via two bastion hosts to a network where there is no direct network access to any host except via load balancers for applications and the bastion host itself. From the bastion host, I SSH to the individual systems on virtual machine network, but I could just as easily use telnet with basically no loss of security since the traffic never leaves the host, and doesn't even hit the network card.