I think the athletes satisfy the requirements of resident status as per section 5 (1)(a) of the Income tax act, and besides the constitution provides that no one is exempt from paying tax. Remember the MPs debate on paying taxes?
I do sympathise with them as they really work hard to win those accolades and prize money, so do the rest of us. Lazima waalimu walipwe, ama pesa zitatoka wapi?
Accept no one's definition of your life; define your life.