No. Me neither. Everything is fine. No dirty roads, no dirty air, no dirty airfilter. Simple physics.
The airfilter snorkel of the like is placed where almost no dirty air can be sucked in. :-)
I have a spare filter already here, but probably will never need it for this scooters lifetime....
If you ride in sandstorms or dunes, dirty, dusty roads or something alike your airfilter will have to do it´s job more seriously and will look different of course.
It always depends on the riding conditions.