What a smart way to be Mekarev a lost Jewish soul who’s posting on Shabbos….
This troller seems to be a troublemaker and an obnoxious person. If indeed s/he is posting on Shabbos, then s/he is an OTD person because there is too much knowledge there about yiddishkeit. Or perhaps people think this person is frum but posts on Shabbos – like there are “frum” people who text on Shabbos. Being polite about the chilul Shabbos isn’t going to be “mekarev” her/him. And calling him on this behavior isn’t going to make the situation any worse nor make him decide to continue being MS