Ariarne Titmus criticised a sports betting advertisement.
The ad included actress Sydney Sweeney.
Titmus argued it sexualised women's sport.
The advertisement provoked a backlash.
Other elite athletes also spoke out.
The ad was for a sports prediction company.
As a separate matter, Titmus revealed she is engaged.
Her fiancé is Mac Powell.
She wrote the word 'Forever' on social media.
The engagement news was unrelated to the ad.
Titmus's comments were part of a public backlash.
Athletes across different sports also weighed in.