Syag, I am not fighting transgressors. I am pointing out transgressions so that people don’t think it’s muttar.
I’m not saying he’s bad. I have no idea as to his level of knowledge; he may very well be a shogeg not a meizid.
Chillul Hashem most definitely does apply to frum Jews. The gemara I’m aware of referring to chillul Hashem is referring to actions done in front of frum people.
I don’t know which other Shabbos transgressions you think I should be fighting. I have written here about such things as the Shabbos App and the Kosher Switch; if you know of other areas which should be spoken about, I’ll try to look into it.
ZD, an aveirah done in public most definitely is a chillul Hashem. I don’t know why you think otherwise.