when you get 10 000 seeds out of a female, popping 10 males in a row means jack shit to the actual ratio of male female of the progeny. Anyway, I think that nowadays, more males is a good thing, in this world of feminized seeds...
Also how can it be a big waste of time? I sex my plants on the edge of the flower room where there is not enough light to grow buds worthy of smoking. In 1 gallon pots with compost and no soluble nutes. The day they show sex I top them and place them in the veg room, then you can invest more time on them. Sexing your seeds is cheap and way worth it compared to growing females. You still get to pick the best males if you want to create your own seeds.