That's not necessarily true, you can abide the terms and create a real account with real information, but close your wall, etc, making it essentially a profile with your real name and profile picture.
That wasn't my point though. I get annoyed when I see these non-solutions being offered. Of course, barely anyone will mind the linking of their FB account. Those people who don't, have no obvious way out (sign up for a second email address to sign up for a second facebook account to sign up for spotify). To suggest otherwise is a bit insulting. The answer should have been: "We're sorry, this is just how it will be from now on."