I'm glad someone is posting a first-hand interaction with SE customer support so that other people might finally start understanding how archaic and terrible it is.

There is most certainly someone somewhere that can easily move a character to another account with probably even just a couple mouse clicks. Anyone from any MMO that claims they don't have the power to manipulate something within their own game is either lying to push you off or clueless.

I don't know what kind of hierarchy they have within SE's support structure, but they will do literally everything in their power to tell you that there is no one higher up than the most base-level representative and that no one else can help you, and then just close the chat on you if you continue to insist to speak to someone else. Despite this, I have personally interacted with higher-ups that solved certain technical account issues within minutes when I got bounced between multiple "support agents" for literally days at a time, seemingly passed on to them at random without any word that my issue would be escalated.

As far as the Steam/Windows account issue: Yet another case of SE's mindboggling lack of foresight. To be honest, I think they just do a lot of things for the sake of seeing what happens.