I think the tone of the thread is set by incredulity rather than being obnoxious. Choosing a boys name and spelling it differently just so you can use it for a girl is a strange premise isn't it?
Colyn
Trevvhu
Math-yoo
It's just very strange.
I love traditionally masculine names for girls. But more Harry as a nn for Harriet or Stevie type names where it's not a case of just blatantly using a boys name.
My niece has a boys name. However, they spell it the same. Not my cup of tea but at least she will only have to explain the one idiosyncracy for the rest of her life.