Well, inversion does have occult symbolism. So, it's not entirely batty to ponder such implications. An "Xmas" tree probably should be as opposite as possible from a Christmas tree, if the purpose is to be in opposition.
Outside of that, it has to just look absolutely ridiculous.
Inversion? The way this country is going- look for "invasion"
Somehow I can't see the self-styled "Satnaists" with their inverted pentagrams and all, sticking one of these trendy monstrosities in their living rooms. Especially since most of them are non-self-supporting teenagers or young adults, and it would their PARENTS' living room.
This particular brand of silliness is likely to appear only in the homes of self-conscious yuppies who try to impress their friends by always having the latest "in" thing. Those who bankrupt themselves by following this course, can save the trees and park them right side up next year, when they can't afford to buy a new one.
It "looks" like a uterus...well, it does.