Depends on your definition of "Christianity." Which vary from "anybody who considers Christ to be a great moral teacher" (by which definition a lot of Buddhists, Hindus, atheists and Muslims qualify) to "only my particular denomination, and I'm not too sure about most of them." So that's a question that cannot be answered without unilaterally imposing your own definition.
and Joseph Smith never intended it to be..
Here you are flat out inaccurate. Old Joe considered himself to be the restorer of "true Christianity." So it is just inaccurate to say that Joe didn't claim to be a Christian. The same continues to this day for his followers.
You (and I) may of course disagree with him as to whether this belief of his/theirs was/is accurate. But not that he believed, or at any rate claimed to.
Here you are flat out inaccurate. Old Joe considered himself to be the restorer of “true Christianity.”
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The LORD Jesus Christ is not to blame for the deviant ideas of the pagan Joseph Smith...