When it comes to underground stuff, or let's rather call it out-of-the-norm kind of interests and activities, in this case - as far as it is possible to define a "norm", I think loneliness and solitude - are they really the same thing ? - shouldn't necessarly be seen as negative things. Personally, as a kid, I had the chance of enjoying reading way more than hanging out with kids of my age that would rather be interested in other stuff which I do now also consider perfectly normal, even though back then I could have been seen as the strange one, always stuck in books or mentally lost in a fantasy world which seemed way more attractive than the real outside world. Also, growing up in the countryside limited social interactions outside of school for a long time, and finding/meeting people with the same kind of interests as mine wasn't that easy, but I do not regret all of these experiences.
I do agree about the fact that as a teen, for example, it feels good to meet with other people with the kind of interests and get some kind of input, or confirmation, but you're not sure about what you wanna do. I had the chance of meeting some of my best friends this way, and they unconsciously led me on what I think was the right path for me. After it, life has done whatever it has done.
Good experiences push you to seek other good experiences, and bad experiences push you to isolate yourself. Failed relationships, broken friendships, reality perception vs reality confrontation, and so on, all of these things can also lead to make the choice of solitude, even though I wouldn't necessarly describe myself as solitary person - I get along with people very fine, I like meeting like-minded or curious individuals, people open to discussing particular things, but I do also appreciate time alone, isolated from everyone, for the sake of mental health. So, I guess that solitude is a choice, but loneliness isn't.
A lot of people interested or being active in Noise music probably do feel lonely because it's not something everyone appreciates - musically talking - and when it comes to themes, ahah, you either meet someone as autistic as you are and share some nerd knowledge, or you get those estranged/confused facial expressions which in some cases honestly made question my mental health. Who's right and who's wrong ? Who can truly tell? I guess it matters only if you give some importance to it. When I was a kid I wouldn't have liked being called a weirdo, but as teenager I slowly and carefully turned it into something else - some kind of armour, let's say. I don't know if that was the right thing, but always better than feeling openly offended or morally and mentally brought down by someone "cooler".
As an adult, I definitely stopped caring and openly embraced this "weirdness". Does it make me feel lonely, sometimes ? Yes, it does. People tend to seek other people's confirmation and approval in some cases, and it's perfectly normal. The sight of others can shape the way we perceive ourselves, in a good way as well as in a negative way. It sure demands some efforts, or some distance (?) - i don't know if that's the right word choice in this case - but well, to everyone's its own, I guess.
To be honest, i think it's totally legit to be socially attracted to groups of people with the same kind of interests, otherwise, maybe even this kind of discussion would take place. But is it truly about input, in that case, or it's more of a purely intellectual interest? I sometimes don't have anything interesting to say about noise in general, but it sure can be refreshing to listen to others talking about particular matters, or, in this case, reading a lot of comments in similar threads.