And, I don’t know that any make-up was ever manufactured according to R’ Moshe’s psak; I’m even more doubtful today.”
So check into it further. You may be pleasantly surprised at what you find out.
I don’t think shaas had’chak is minimal Halacha. It is Halacha for a rare emergency occurrence, isn’t it. You may eat meat under one type of hashgocha. perhaps I eat meat under another one. If you were to eat the same meat as I, because there was nothing else available, you might feel that is shaas had’chak. But if that meat is meeting (pun intended) the minimal proper standards of kashrus, you may not want it for yourself, but it certainly is no shaas had’chak for me. For me that might mean eating NON-glatt meat that I knew to be kosher (though I would just eat whole fruit or vegetables, probably, in that case). It’s a semantic issue in many ways.