First, let me be clear I agree with you. I wanted to highlight this because I think there is a certain level of misinformation where a pattern is not needed. A single post that states vaccines have never worked against viruses and people caught COVID from the vaccine is enough for mod action in my opinion.
One problem with relying on other posters to refute the misinformation is that someone reading along can’t necessarily judge who is correct. Poster A says “vaccines cause COVID” and Poster B says “that is a blatant falsehood” - to someone who doesn’t know, it can seem like a topic up for debate, the truth lies somewhere in between.
So I’d like to see a post with dangerous information that is clearly incorrect be clearly modded. Add a staff note above it saying “the information in this post is false.” Post a colored moderator message with a more clear explanation in the thread.
Looking for a pattern can come into play when deciding if it’s just a note or justifies a warning.