"what if the government becomes a dictatorship" is a stupid question: you either stood up and opposed it, or you let it happen.
My privacy is important as a matter of consent.
But I should not have to hide my sexuality or identity, nor my politics and if my support of a marginalized group exists then what is the point of hiding it while they are oppressed? What benefit does that bring?
Encouraging people to be private in their views and anymore and anonymous in their "support" is exactly how fascists crush their opposition.
>But I should not have to hide my sexuality or identity, nor my politics
You shouldn't but you can't and will never be able to know what the future looks like. You could be in libertine Berlin of the 1920s and be hunted down by fascists a decade later because of your ancestry or sexuality.
And don't think that can't happen quickly again, it's not much of a hyperbole given the way the world is going. And nowadays, once you put something on the internet, good luck getting rid of it. So I'd be very careful with what I disclose, it's not paranoia any more. I'm European and flew to the US earlier this year and got asked to disclose my social media profiles. I have none, deleted them a decade ago. Is that sane or moral? No but if that's how the US rolls these days imagine where else your data can end up.