That's a rubbish analogy and a rude one. It's not that people aren't interested in watching someone, it's that they probably prefer someone else, not that they dislike someone. Contestants aren't voted out.
I can't believe that people don't realise the purpose of the dance off is to put the couple through who perform the best. Not to appease the public. I don't know how people don't get this after 20+ years. This so annoys me.
In addition, this week, if they had saved Alex, she'd have either struggled through with an injury or resigned through injury, totally stuffing up the final.