I just think all Abrahamic faiths should celebrate Jewish holidays because Jesus, Mohammed, and the other Abrahamic prophets all celebrated those holidays. Hanukkah and Passover have nothing to do with the Jews anticipating the coming of the Messiah.
And then, we have the complications involving the Jewish holidays interfering with the Christian holidays. I guess it wouldn’t hurt to celebrate Passover during Lent, but it would be odd to have both Hanukkah and Christmas during December. The convenient time to celebrate Jesus’s birth is really the only reason why I thought that Christmas shouldn’t change from being on the same day as a Roman pagan holiday, but already having Hanukkah can be an excuse for Christmas’s date to change. Of course, we have to celebrate Christmas at some point, though. I guess it really doesn’t hurt too much to have two December feasts.