Even if you exclude the race stuff, or even the bullying, Jo wasn't coming across well anyway. She seemed miserable, bitter and sitting around in her dressing gown smoking was never going to enhance her image as a pop star. She said she only went on the show to earn some money, and if she hoped to use the experience to do more music, or launch a tour, she kept it well hidden. When they played an S Club song in the house, she pulled a face and seemed to resent it.
It's a shame, because S Club have a great back catalogue that still stands up today, and as Jo was the main singer on most songs, she could have had a reasonable career, earning decent money, singing a few of them at events, and possibly building up a solo fan-base too.