I'm sorry but I have never seen any lads at all wearing underwear under swimsuits, I think that is complete rubbish and everyone who gets into cold water shrinks, no matter how big you are! I know loads of lads are massive on the soft but don't grown much when get hard and others are like maggots when soft but have cocks like donkeys when hard, 'growers and showers' I believe its called! But I agree with your point about young gay lads having no masculine role models, I've peddled that for years and its the young gays who have paved the way for homosexuality to be more acceptable, the feminine gays as people would call them, butch men on the other hand real the rewards of what young and feminine gays have done for them, but instead of thanking them, they put them down and bully them equally as much as straight men do/have!
I know that homosexuality would not be half as accepted in my city if it hadn't of been for the likes of me who came out at 14 years of age and fought for my right to exist, by doing things which these so called manly gays, like boxing, judo, karate, played five a side and 11 a side football/soccer, basketball tennis and swimming, I've swam for the north of England twice and was a gold medalist and I was a city club and city champion gold medalist runner and champion and city long jump gold medalist and record holder!
I never had any male role models who were gay, the only role models I had were straight men who forced me to be butcher than I look!