The 29-year-old double Olympic gold medallist announced the decision on Tuesday, saying her Dutch heritage and the prospect of stronger high-performance support had influenced her choice as she prepares for the 2028 Los Angeles Olympics.

Smith, who holds both South African and Dutch citizenship, won gold in the 200-metre breaststroke at the Tokyo Olympics in 2021 and the 100-metre breaststroke at the Paris Games in 2024. She also secured two silver medals, bringing her Olympic total to four.

She said the move would allow her to explore another part of her identity while pursuing a more sustainable swimming career. She has made clear that she remains grateful to South Africa and intends to continue training in the country.

Her announcement has reopened criticism of Swimming South Africa, with former Olympic champion Roland Schoeman questioning the federation's treatment of elite athletes and the financial demands placed on swimmers representing the country.

Smith has previously raised concerns about her own experience with the federation, including a dispute over prize money from the 2023 World Aquatics Championships that was withheld and paid more than a year later.

South Africa’s Sports Minister Gayton McKenzie has described the decision as a personal choice, saying the country does not own its athletes. He also acknowledged concerns about problems within the swimming federation and said a reform process was underway with oversight from World Aquatics.

The switch has also prompted questions about the ethics of athletes representing a country other than the one where they were born or developed their sporting careers. However, Smith's decision does not involve abandoning her South African citizenship; she is exercising her existing Dutch nationality in the sporting arena.

The debate highlights a wider challenge for countries seeking to retain internationally competitive athletes: national pride and sporting loyalty must be supported by sustainable funding, effective administration and conditions that allow athletes to build long-term careers.