I smiled at the posts above although really i should have cried. Cos like nobody would ch”v post in here on shabbos and end off with nisht af shabbos geposted, they also shouldnt discuss things which are assur to talk about and finish off paradoxically with the phrase nisht af shabbos geredt!
So why do people do this?
Well, I have a theory that because hachayim v’hamaves beyad halashon, there’s a much larger yetzer hora to do aveiros thru speech. We therefore do aveiros via speech that we would never do thru action or deeds because we dont have the yetzer hora to do so. But this does not excuse it!
Similarly, from the mechaber we see that it’s worse to talk in chazaras hashatz than to kill someone r”l. But by walking into most shuls, this will unfortunately not be too obvious.