Because:
(1) most GWM are short, with short arms and legs.
(2) most GWM are too heavy with lots of weight from extra muscle mass and fat. To jump high you need to keep your weight down.
(3) your quads are not the most important for how high you can jump: your calves are more important, and a muscle called the soleus below the calf is the most important of all. And most people struggle to train their calves.
(4) look at the bodies of champion high jumpers and the few women basketball players who can dunk: very different from bodybuilders.
(5) women have smaller hands than men, and few women (few men, too) can palm a basketball.
Dunking is more genetic than anything else. There are some short people who have trained themselves to be a be able to dunk but for every one of them there are like 5,000 6'4 high schoolers who can dunk with no training at all.
Because:
(1) most GWM are short, with short arms and legs.
(2) most GWM are too heavy with lots of weight from extra muscle mass and fat. To jump high you need to keep your weight down.
(3) your quads are not the most important for how high you can jump: your calves are more important, and a muscle called the soleus below the calf is the most important of all. And most people struggle to train their calves.
(4) look at the bodies of champion high jumpers: very different from bodybuilders.
(5) women have smaller hands than men, and few women (few men, too) can palm a basketball.
Dunking is more genetic than anything else. There are some short people who have trained themselves to be a be able to dunk but for everyone of them there are like 5,000 6'4 high schoolers who can dunk with no training at all.
A touch of realism. Many many guys can dunk and they don't have to be 6-4. I could dunk it at 21 and was 6-4. I've only seen a few women in the world who can do it. There are hundreds of thousands to likely millions of men who can dunk. Genetics and the way men and women are different. I've yet to see a woman under 6 foot 2 who can dunk.
How come we don’t see GWM dunking basketballs?
Surely some of these girls with 5’9’’ and above with massive legs should be able to do it.
This one below is 5’7’’ with weaker quads (for this website) than most and was able to get close
She's still a ways short of dunking That is a layup. She is a ways off being able to dunk, though her jump is impressive. Leg size has little to do with dunking. Loads of skinny guys can dunk with the best of them. It is not a quad size thing at all. That would likely work against you.
How come we don’t see GWM dunking basketballs?
Surely some of these girls with 5’9’’ and above with massive legs should be able to do it.
This one below is 5’7’’ with weaker quads (for this website) than most and was able to get close
If you look at the NBA nobody has monster bodybuilder quads or calves.
The overwhelming majority of professional female basketball players cannot dunk. Why the hell would some rando "GWM" be able to do it?
How come we don’t see GWM dunking basketballs?
Surely some of these girls with 5’9’’ and above with massive legs should be able to do it.
This one below is 5’7’’ with weaker quads (for this website) than most and was able to get close
https://m.youtube.com/shorts/nv9C26eiJYw