Why not? Scooter with small wheels and low CoG are even better at it than regular bikes.

Gymkhana is an agility test. The lighter and lower the centre of gravity, the quicker the bike will change direction. Don't confuse leaning for being quick. Smaller wheels also help in changing direction as they have less angular and rotational momentum.

Lighter bikes dont need to lean as much to be equally as quick as a heavier bike.

I used to do a lot of autoX during the days. My 900kg car tuned for it would run rings around other supposedly more sporting cars.