Yes, I understand the attack, but what is the threat? You are already uniquely identifying yourself to each of these servers. What is the threat to you if your identity is correlated between them? You probably have the same username on many of them, no?

It seems like privacy cosplay to me, tbh. I'm genuinely curious what type of threat it actually protects against, if any. What happens when two different systems you ssh into knows it's elric on both?