>>6942985It's not just for the idolfags, it also fundamentally changes the relationship they have with the audience. It doesn't matter if the streamer is male or female, that only changes the number of idiots who think they have a chance to date the streamer.
Everyone has stuff they don't share with strangers. But as a streamer, your audience is supposed to be at least one step closer to you than that - they've seen you cry and laugh, you've shared personal anecdotes with them, they've given you snippets of their lives and heard your opinions on them. You have an idea of the overall character of your audience, what entertains them, what bores them. It's a weird kind of relationship but a relationship nonetheless, and one with hundreds of hours involved for many people.
Now, if you had a friend who you went through a lot with, and shared lots of stuff with, and then later you found out he had a girlfriend for years without you knowing, you would be somewhat pissed, right? It's that he's keeping something from you that is (supposed to be) of the utmost importance to him, and yet he considers you so irrelevant to his life that he won't even tell you about it. Your whole relationship was far more one-sided than you thought. You've only been seeing half - or less- of the person he is. That's the betrayal.
Now you might say "oh, it's not that big of a deal, right?" and that's true, too. For most of the audience, they won't be able to quite explain it, becauze their first instinct is that they've feel cucked but their rational mind tells them that's not true - but it is true that they don't feel quite so connected to the streamer any longer. They just don't find him or her quite that real anymore; they've gone from a person to the insurance salesman at your local mall who doesn't really care about you. A wall has built up between the audience and streamer. So they just drift away silently, and your growth is never quite what it used to be, there are more tourists, more viewers who clearly aren't invested in your content; the interactions feel a little weirder, a little more artificial...
Now you might say, "whatever the streamer does outside the stream is their own business" and it ought to be, but real life doesn't work that way, or companies should have no problem with hiring weed smokers, and a prison record should be no barrier to being employed. Sure, its not as serious, but that applies to the audience as well. Viewers are spoilt for choice. Why should they stick with a streamer who has shown that they have no problem with hiding such a huge portion of their life away whole pretending otherwise, when they have so many others to pick from?