I've always thought it was a sign of respect for their years of hard work was to call retired fighters by there a champion status what do you think? 
They aren't the president.
Georges can rightfully be called champ in retirement.
On another note, not a huge fan of referring to belts as belonging to ex champs.
Like last night when Goldie said Hendricks wanted to get 'his' belt back. No, he wants to get THE belt back. The one that is Robbie Lawler's.
Possessive language should only be used for those that actually possess the belt.