The title basically sums it up.
"My position is that it is not fitting to enter the Western Wall area with religious symbols, including a cross," said Rabinovitch in a telephone interview with The Jerusalem Post Monday. "I feel the same way about a Jew putting on a tallit and phylacteries and going into a church."
That's his preference and he's welcome to it. I myself would not care what a Jew was wearing if he were to come into a Catholic church. This is just nonsense.
Before 1967, when the Western Wall was under Jordanian rule, Jews were forbidden to pray there. In the Six Day War, Israel conquered east Jerusalem, including the Western Wall, from Jordan and prayer was opened to all religions.
If the wall is going to be open to all religions, then all religions should be able to show up in their usual garb and the garb of a Christian includes a cross.