It does seem that such an amendment shouldn't be necessary, but it may be. The act of at least trying to pass such an amendment may call attention to the fact that it appears that Christianity, the Ten Commandments, or anything that relates to the Judeo-Christian God are the only things that seems to be unprotected from political correctness, "hate-speech", etc. If other religious are attacked or questioned, whoever made the statement is viewed as "intolerant".
And look at all the trash Hollywood and "artists" have generated that has been anti-God. Maybe such an amendment, or the attempt to pass such legislation, will stop at least some of that bile.
Do you think that this would make muslimes stop wanting
to kill christians and jews?