It's not just snark—try dropping a colloquial "all" or "none" in a context where that's clearly what it is, and watch ten people rush to correct you that "well, technically..."

Or even carefully qualified statements! I think folks here drop "most" and "typically" and similar words as they read. You have to write poorly, qualifying everything three times and disavowing a bunch of stuff you obviously aren't saying or even implying anyway, to make sure you don't get a bunch of pointless comments.