I’m not really going to argue the point. I suggested a reason why it may have been removed. The liturgy “is what it is” and unlike most traditionalists I won’t berate the modern liturgy, I will however criticize abuse of the modern liturgy. As the cliché goes, it is what it is. The Dies Irae at least has not been lost into the mists of time, it’s still the hymn for Vigils, Lauds and Vespers of the 34th week of Ordinary Time. True that makes it less than frequently heard, unless one is fond of frequenting Benedictine abbeys that still use Latin, of which there are many and of which the abbey I’m affiliated with is one. I’ve also chanted it at an OF funeral, at the deceased’s request. I guess that constitutes an abuse as it isn’t in the modern liturgy… but I was not the liturgical planner, just a chorister. FWIW, I think it is a beautiful poem and would have preferred if it had been retained. It wasn’t and I’m not going to lose sleep over it. I love chanting it during the 34th week of OT though, when I chant the LOTH. It’s not a particularly easy hymn to chant.