Isn't Zemmour literally a pied-noir, ie. one of the guys driven out of Algeria once the 'brave anticolonial freedom fighters' won there (with an assist from the anti-French deconstructionist leftists back in the Metropole - I know Sartre, who incidentally raped children & young teenagers alongside Simone de Beauvoir, was a big fan of the FLN) and promptly began massacring & torturing everyone who wasn't an Arab Muslim supporter of theirs?

Little wonder then that he'd have a very personal stake in opposing all of those things you mention. Hope he wins.