How are boobs not sexual but bulges are? When i say bulges i dont mean a literal outline of a cock just a bulge.
" They arent noticeable irl" This might be a difference in culture because i dont know how American beaches are but in my country its extremely normal to see guys in speedos and so are bulges, but you wont be seeing anyone that has a underwear that explicitly outlines their dick.
Again if the dev doesnt want to add them its fine but if the reason for that is that they are too sexual i think thats a stupid reason cuz the difference between them and large breasts is literally none.