I disagree.
In fact, it's very unlikely that you'll be given a card in Stage Two of
the interview asking you to describe a "sports star". It's much more
likely that your card would ask you to describe a "famous person", in
which case you could describe a sports star, an entertainer, a
businessman, a political figure, or any number of different types of
people.
And if you are asked about the topic of "sports" in Stage One, it's
fine for you to say "I don't like sports!" The interviewer will
probably ask you "why?", but you don't need any specific knowledge of
sports in order to explain why you don't like sports.
The most important part of the IELTS interview is *not* your knowledge
of the specific topics; instead, the most important thing is your
ability to express yourself in English about a variety of topics.
Let me know if this is unclear. I'm happy to continue this discussion.
Best,
John
