Back 15-20 years ago, forums didn't like personal abuse or being off-topic. Now, the problem seems to be "dangerous ideas" or "might influence people to believe

Back 15-20 years ago, forums didn't like personal abuse or being off-topic. Now, the problem seems to be "dangerous ideas" or "might influence people to believe something I don't". It's changed from staying reasonable to trying to influence real world politics by silencing dissent. Why not have freedom of political ideas on a political forum? Stop worrying about influencing voters in the "wrong" way and meddling in elections and all that nonsense. Even on HN, there are "wrong" ideas that you can't even hint at, even when they're on topic and you're being non-abusive. It's dominated by aggressively enforced political opinion.