I’ll bite. Why wasn’t it real?
However, many churches bring communion to shut-ins - but then the person is given the elements by a pastor or elder.
But - in the absence of a pastor or elder (although Aldrin was an elder!) I believe God was honored by the communion (communion between God and Aldrin) as Aldrin followed his heart of “Do this in remembrance of Me.”
Of course this is a rarity. I believe if at all possible communion should be done in community.