Seen a lot of posts on Lemmy with vegan-adjacent sentiments but the comments are typically very critical of vegan ideas, even when they don’t come from vegans themselves. Why is this topic in particular so polarising on the internet? Especially since unlike politics for example, it seems like people don’t really get upset by it IRL
You’re describing the Fallacy Fallacy, being that the implication that the argument is necessarily wrong because a fallacy has been committed. That a fallacy has been committed by the other party should not alone be used as an argument against the point itself.
I.e. you committed a strawman fallacy by stating that all strawmen are made of straw, therefore no strawmen are made of straw