I disagree. It's a crying shame (historically speaking) that the Jews of Germany in the '30s didn't listen to the few voices counselling escape before it was too late. Sharon is not "telling anyone where to live". He's just stating the obvious:
France has become too risky for you to remain in, as was Germany in the '30s, and you're always welcome in Israel.
I think he said the right thing at the right time, and those Jews in France who don't listen are fools.
It is a conundrum. France does not forbid Jews to leave France if and when they choose. Now if it began to look as though France might change that policy, it would be a whole nother ball of wax.
Sharon's call puts America in a bit of a pickle, too. Does America's "support for Israel" now amount to a tacit support of wanting France to be rid of its Jews? That is a plasma temperature hot potato.