First off, that just would not be true as men tend to be masculine and secondly, that doesn't change the fact that men's voices change with age and you just wouldn't have that with a female va. Also I already said that but, usually those voices just do not sound good or fit the characters so they opt for women to just do a boyish sounding voice, examples: most anime femboys in general
Also send in what you worked on, are they popular or even known at all? Do you screenshots of people who you do not know that complimented the voice you did? Can you send in what characters you even did? Like just saying "I'm a femboy va" okay?? Also the OP asked for male voices, which doesn't just mean femboys. WHY would you have to be a femboy to voice a femboy character? It's called voice ACTING you do not need to be like the character to voice them. Also I have heard femboy voices done by femboys that aren't from jp and they aren't good, they usually are still very masculine and it sounds noticeably bad..
Also "Loads of us around" for femboy va's is hilarious, please send in examples of femboy voice actors that worked on games that got noticeable success and aren't just a nobody game or series and you only know them cuz you're discord pals. Put their names, how many of these characters they've work on, how many projects and their names, and put in images of them that prove that they are even femboy (such as them crossdressing etc) AND they cannot be Japanese, from JP VA, or Asian in general cuz as we all see asian va especially jp va are on a whole different level than us so please show me this (They also can't be from porn/hentai games no, I'm talking about games without those themes that are notable in any way, that anyone has heard of) Also put the player count, ratings, and views on these projects (Also I want at least 30 of these femboy va's since there's just "loads of them")