This reads to me like it requires the entire answer to be published under the GPL. I guess it does cause accidental violations of the GPL, but in the same way

This reads to me like it requires the entire answer to be published under the GPL. I guess it does cause accidental violations of the GPL, but in the same way as pasting GPL code without attribution. Or pasting MIT code without attribution. From a layman's perspective, the only difference is if the comment mixes GPL and some incompatible code in it. But that would be ridiculous under any license, so I actually don't know what to think about it. Could it be that fair use applies to SO snippets?