The answer is that the International Olympic Committee (IOC) has recognised the World Bridge Federation as a sport organisation, and as such, bridge is subject to the same regulatory environment as any other Olympic sport.
Tourette Syndrome is one type of Tic Disorder. Tics are involuntary, repetitive movements and vocalizations. They are the defining feature of a group of childhood-onset, neurodevelopmental conditions known collectively as Tic Disorders and individually as Tourette Syndrome, Chronic Tic Disorder (Motor or Vocal Type), and Provisional Tic Disorder.
Tourette's is part of a spectrum of tic disorders, including transient and chronic tics. The tics may emerge at any age, but do so most commonly between the ages of 6 and 18.