how does this respond to my request to prove the above claims that ROCOR already in 1971 was no longer a true Church because it had compromised and committed spiritual fornication with the ecumenists?
I haven't heard anyone else say this, this is just my own speculation. I wouldn't even call it theologoumena. I believe that freemasons, new calendarists, ecumenists and Sergianists are already condemned.
Fr. Alexander Lebedeff wrote an email in 2006 that said that ROCOR had been involved in ecumenism since the 1920s, in the predecessor to the WCC in the Committee on Faith and Order. His email is referenced here. He wrote:
Even as late as 1951, the ROCOR sponsored a European sub-Assembly of the WCC, held in Baden-Baden. You can see pictures of this assembly, with ROCOR Archbishop Benedict and Bishop Alexander surrounded by the usual WCC melange of Copts, Armenians, Anglicans, Methodists, Lutherans, etc. in the official history of the ROCOR, published during the time of Metropolitan Philaret in 1968 (the two-volume Sollogub opus).
ROCOR also sent an official delegation, led by Archbishop Anthony of Geneva, to the Second Vatican Council in 1962.
So I don't see how you can make the case that ROCOR had maintained a true confession of faith. The only groups that had maintained a true confession were the Matthewites and the Josephites.
So this is just my own speculation. I don't believe that grace gets turned off like a light switch. And I don't believe that someone is a heretic unless they formally embrace it. So there is some "fuzziness" here. I am just trying to develop a consistent position.