I too find it hard to understand the hate for both Debbie and AB. Are people basing it just on the main show or from tabs or what? If you're a regular watcher of ITT Debbie in particular comes across as so humble, so lovely.
Agree with the others that all non dancers would be very dull. And I'd be surprised if Joe and Davood as actors have not had any dance training. Whereas I don't think Susan had ever learned a routine in her life. I do an aerobics class every week - my teacher has done fit steps with Ian Waite so she throws the odd routine in - you can really see the difference between those who've done dance as children and those who haven't. You pick up a routine much more quickly even at the most basic level.