Is it really? I don’t recall the cycleways being dominated by young white men.
Not that I always feel safe on ‘cycle superhighways’ which in many places are just a glorified bike lane tacked on as a complete afterthought, weaving on and off pavements and around bus stops, lacking proper signs to know where it continues after an intersection or just randomly finishing and leaving you stuck in the midst of cars.
I wear a single layer cloth mask for running as that’s where I suffer the worst. Makes it really hot and heavy but still infinitely better than wheezing the whole time.
I don’t really need it for cycling but it’s tempting for combating exhaust fumes too.