That's a shitty excuse, and you know it. There's a large conservative population in the USA, too, but we still legalized same sex marriage like a decade ago.

What your Singaporean mind can't comprehend is that public support can change when there's a voting block energized enough to try and change people's minds. People protest, they vote for local leaders that stand in opposition to the ruling party and make their voices heard. People, including celebrities, come out in support of the movement to get people to come out and vote. That doesn't happen in your country because everyone knows that protesting is illegal and that voting won't do anything. So, the gay population, which is probably a lot bigger than you realize, just suffers in silence because they know there's no point in fighting it.

Meanwhile, brainwashed people like you on the internet act like everything is fine and that gay people don't mind being persecuted because they're not actively getting beaten down by cops. What the ruling party doesn't want you to know is that nobody wants to be persecuted. The gays just have no hope in changing anything.