There are a lot of transvestite men that aren't homosexual they just enjoy wearing dresses and make up.
It is also best to think of the term trap as a strictly fictional term, there are more appropriate classifications for real flesh and blood living human beings, because traps are fundamentally fictional constructs that offer at best a parody of the real world, people applying fictional rules to the real world has lead to far more suffering than you could imagine just look at history.
The idea of a trap in essense reduces down to "draw a girl call it a boy". This is much easier to do when we are dealing with lines on a page in black and white than the infinite murky shades of colour and grey we see in the real world.