Mentsch:
You started out by saying they keep minimally kosher and don’t wear tzitzis, then later you end up saying they changed from black to colored yarmulkes. One of these is a much bigger departure than the other.
“I even know of one person who threw out a Reese’s bar rather than give it to someone who eats chalav stam.”
Suddenly everyone has to hold like Reb Moshe? How do you justify all the times the MO differs from him, then? Do you believe it’s only okay to disagree with Reb Moshe in the direction of being meikel?
Cholov Yisroel is a stam halacha for which there is a heter than gets you around it. Same is true for kemach yoshon. Popularity of a heter doesn’t make it any less so. The majority of klal yisroel relies on the yoshon heter, yet it would be silly to say that somebody keeping the chiyuv doraisa of avoiding chadash is doing a “chumrah.” The other 90% of us are doing a kulah, and some of us have enough self-awareness to admit it rather than pretending everyone not like us is crazy.