Jphone, I don’t know what stage of drunkenness that you refer to however I am unaware of anyplace that Rav Hirsh zt”l makes known his view of the chiyuv Ad Dilo Yudah. I am aware that the view that has been followed tradiotionaly in Yeshivos is the pashut pshat of the Gemora and Medrash (Otzer Midrashim) and advocated by the Rambam which is one is required to drink until the point of complete inebriation at which time one is potur from drinking further.
The point of complete inebriation is define as not being able to discern the difference between Arur Human and Boruch Mordechai.
Being that every single one of my Rabbeim including Gedolei Hador (one who passed away) stated as such and I personally saw many drink to that point on Purim. I personally will not be the one to break the Mesorah.