Brandolini's Law also comes to mind. Countering bullshit takes more effort than creating it. It's an understandable self-defense mechanism for an individual or even a community to just isolate and quarantine the source of a problem than to engage with them in earnest discourse. Trolling, astroturfing, and propaganda are real things, no amount of engagement will sway the opinion of bad-faith actors.
This is still too cynical. A large majority of people are not bad-faith actors but rather normal people who simply want to live their lives.
To be clear, I'm not arguing whether the lockdowns were good or bad. I do think they were necessary. I'm more arguing that we shouldn't suppress and ostracize people who disagreed with them. It's okay for people to disagree.