If your sexuality has played a minimal or non-existent role in restricting your ability to engage with electronic music subcultures, then that's great, and a testament to the work done by many people, of all sexualities, to promote inclusivity. I'm really happy to be corrected on the universality of the point I was making. Perhaps a better way to phrase it would be: it's bizarre to imply that sexuality can't ever play a role in people engaging.
Either way, I'm still uncomfortable with the broader argument put forward by strettara and others that positive examples like yours negate the negative experiences of others: both society as a whole and electronic music subcultures more specifically are still predominately geared towards the needs and identities of straight white men, whether that expresses itself overtly in a "boys club" atmosphere or more subtly.
I think lines serves as a really useful example here. As you rightly say, the atmosphere here is very far from the locker-room banter you might find on muffwiggler or elsewhere; people are remarkably and uncommonly tolerant, open-minded and civil. And yet, as others have noted, the very platform of an online message board still raises issues around gender, sexuality and race, given the ways in which the internet as a whole can be so easily used for anonymised abuse, and the associations and fears which can build up around that. Even without doing anything actively "wrong", the very function of this community is still unknowingly enmeshed with wider systems of inequality.
Again, if you haven't personally experienced any concerns or restrictions around these issues then that's a wonderful and positive thing, but I think it's dangerous to expand that argument to suggest that these questions might be less worthy of concern on behalf of others. It seemed clear to me (particularly given his previously expressed views on these topics) that strettara's original question strongly implied that sexuality couldn't possibly affect people's engagement with synths or the subculture around them. I think that's a misguided view, and one which deserves challenging.