Yeah you might be right. Any government will inevitably grow corrupt and needs healthy fear of the people to keep them honest. Or as a wise man once put it: “The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.”
That would apply to any minority opinion as well, like supporting Palestine today, or being opposed to Japanese internment camps during world war 2 or opposing the Iraq war. Or being opposed to COVID vaccine mandates or school closures. People get cancelled for this stuff all the time, and being able to speak freely is critical to derailing social movements that go too far, which they always do. Anonymity is a double edged sword, where it holds people accountable for hate speech, but also provides security to express opinions that are contrary to prevailing narratives, things that desperately need to be said.