Also, how did pink become associated with the stereotyped image of gay men?
There may be more that can be said, but you may find what you're looking for in my past answers:
Where's the evidence that pink was once a color for boys?
It used to be acceptable to dress young boys in dresses. Nowadays dresses are considered "feminine," and dressing a young boy in a dress would be cause for some side-eye. Why did this change?