Twice you have claimed to be sick of the discussion, but that doesn't seem to stop you from trying to have the last word. I'm looking forward to your next reply.
I just conceded that you were never trying to argue we should acknowledge heretical churches, so there's no call to go highlighting that part of my last post out of context. I was only saying you were being unclear. It doesn't matter whether you think you were being clear, because you were not being clear. I mean, does it even make sense to say we should cross ourselves because a heretical church might have holy relics, and yet refuse to enter it for fear of the heresy, as you also suggested? What if you want to venerate the relics? If, as you yourself acknowledge, certain saints warned their followers against even entering schismatic churches, aren't they being sectarian by your standards? When Abp Averky allowed Copts to serve in Jordanville, Met Philaret had the church cleansed with holy water before allowing any more services to proceed. Was he being a sectarian fanatic? Or perhaps his action was just a formal ritual, with no spiritual significance?
The situation is obviously very complicated, which is why we have on the one hand St John Maximovich, who not only crossed himself in front of heretical churches, but even entered them and served offices at the tombs of the saints, with the permission of the RC clergy, yet on the other hand, we have saints of the Old Calendar or Catacomb churches counseling their followers to avoid having anything to do with schismatics, to the point of even refusing to enter or look in the direction of the schismatic churches. Don't those schismatic churches contain relics and holy objects? The point is, you were trying to prescribe only one of the two options, namely to cross yourself before both heretical and Orthodox churches, but you didn't justify it simply by saying that these churches probably contain relics, which would be unobjectionable. You justified it also by this quasi-ecumenist reasoning that we have to look beyond the "ideological-religious" position of the faithful, as if all the "branches" of the Church still contained some grace. If you had no intention of making that an argument in support of your position, you should not have introduced it, and certainly you should not have continued to indulge in similar kinds of reasoning, by stirring up fears of sectarianism, warning us not to be like the Jehovah's Witnesses and so on.
I'm sorry if you think our holy struggle is just about "ideology". Most of us don't see it that way. We believe there is a direct connection between the confession of faith of the people and the holiness of the places where they worship. Therefore, it is not absurd to suggest that churches served by heretics, even if formerly Orthodox, have become defiled by heresies and possibly become the abode of demons. At the same time, I'm sure holiness remains in the relics of saints, in the holy icons and so forth. If you think sometimes it's best to give the place the benefit of the doubt, you have to recognize that there are also good reasons NOT to make the sign of the cross when passing a heretical place of worship. I'm not going to tell you which to do. As I said, it's really more about the reason WHY you make the sign of the cross or not, not just the action itself.