Ujm, i disagree – meat is something that even MO don’t play games with; tzadikim wouldn’t eat basar shehoreh bo chacham..
Rav moshe was not the first to have a kulah with cholov akum shailos; the pri chadash was very meikil across the board, holding that the takanah was not lo-plug. Many communities followed the pri chodosh in Europe. Rav Moshe argues that even if we say it is lo plug, we have an “anan sahadi”. Gedolim who argued on the psak, I don’t know if they held it was, excuse the pun, “udderly” treif – the satmar rov and the tzeilimer rov made great effort to bring cholov yisroel to the tzibur, but mayhaycha taisa that they held it was totally assur? Also, if a chasidish person ate cholov stam, aside from the issue of nedarim, can we say that he ate treif? The satmar rov had tremendous respect for rav moshe and only engaged in machlokes when he felt it was extremely crucial, but can anyone who knows the facts please shed some light on the matter?
I think there’s a big difference between something no one does today (non-glatt, and a shailoh of a deoraysoh) and something that many yereyim veshlaymim do (cholov stam, which is at most, a derabonon) in terms of what’s the “geder” of a poretz geder (I can’t resist puns)