Without mentioning names, I have personally witnessed leading gedoley yisroel get so drunk that they were carried to bed without bentching and davening maariv. And there were those I saw daven maariv dead-drunk. What about the issur of davening while drinking more than a riviis, let alone bottles of booze? These same gedolim were witnessed getting slammed on hard booze, not like the Rashi you mentioned. I have also seen them get drunk on the first night of Purim, and when questioned he answered “the first night of pesach is leil shimurim, and tonight is leil shikurim” (See machzor vitri, talmid rashi).
These same gedolim get dead drunk on simchas torah and then get aliyos and daven mussaf.
I don’t know who Jothar is, but these gedolim are not blogging on YWN.
And don’t start with the “they are on a higher madreiga” nonsense.
They know the mishna berurah better than you ever will in your life.
Period.