Regarding your 1st point. You or your Rebbe is (i am guessing) a talmid of r” tuvia goldstein. Neither i, or my rav are. That you are sticking up for his shitta is great. On the other hand, R’ Dovid, was just as close to his father as R’ Tuvia, and discussed his shittos with him as well. If you are saying that it is a machlokes between the 2 what r’ moshes opinion would be today, fine.
Regarding the 2nd matter. You dont see anything wrong with unsigned mass mailing that makes claims about hilchos eruvin and what rabbonim who are no longer alive would say? The mailings for and against the eruv were so stupid (i really cant come up with a better word that is appropriate) that i wanted to throw it all in the garbage.