Just to confirm the gist of what the admins have been saying in here, they don’t really care about your address or even the fact that you’re registered with a valid one.

Source: My account has an obviously bogus e-mail address associated with it. (I don’t remember what exactly). By apply for ngwhat little charm I have, I still have a valid SJW account.

Sure, I won’t be able to do password recovery via email and other QoL stuff, but that’s a sacrifice I’m willing to make.