amirican yeshivish,
“I say this because i find it important to diffrenciate. I know of a Chabad person who went OTD because she ate Cholov Stam and then threw in the towel (nebach) because anyways she did an aveirah…”
This is a common polemic against minhagim or chumros, but it’s rather silly. If someone “throws in the towel” because they believe they did an aveira, ate chalav stam, or flipped a switch on Shabbos, or slept past the zman, or whatnot, their problems are way beyond whether they are aware of what’s a derabbanan or a deoraisa. If someone goes ballistic and burns down a hotel because the scrambled eggs at the breakfast buffet were cold at 10am, would your main takeaway from the incident be how important it is for hotels to keep their eggs hot?