For anyone to say or suggest, that Rav Gronish ‘changed’ his halachic views, because of who he married is to call into question his integrity because of politics.
I think one ‘may’ (I’m not sure, but I would not want to be the one to do it, and then find out, the hard way) have a lot to answer for, in The beis Din Shel Meila, to talk that way about any Gadol Hatorah.