AAQ:
There is no “chazaka” and this has zero to do with politics.
1. The organization is “Religious Zionist” which means it has zero chezkas kashrus, to begin with. The Av Beis Din is this Chief Rabbi, as mentioned above.
2. Where is the original teshuva permitting the first Chief Rabbi to enter that church? Which gadol applied that alleged heter, if it did exist, to any future time?
3. There could be 1,000 fully frum and non-Zionist talmidei chachamim on that beis din but that would be totally irrelevant given the above. The question is not on them; they are irrelevant.
This whole church thing is obviously a mockery of G-d but, just for argument’s sake, even if there was a heter back then – which nobody has produced – in that specific time and for that specific king, who said that heter still applies? Where is the teshuva showing how/why that would be?