To me something isn't canon until we see it again in another game. The Ghost in Fallout 2 was never mentioned again, ghosts in general, unless you count the Dunwich Building
I guess to you "if it is made it's canon." I am not trying to be a dike that is an honest question.
You seem to defend the idea that if it was a bad 1950s movie it's ok to be put into Fallout. And the "Oh it's a game don't take it seriously" is also an annoying argument. Why can't games tell a serious story? why can't they be taken seriously? I take Fallout seriously and so do alot of other people. I am for humor, I am for easter eggs and for fun DLC.
Wild Wasteland was put in the game to prevent all the people who just don't understand the difference between Easter Egg and Canon. Cause there are alot of people who think "well it was made it's canon!" It was also made because alot of people didn't like the humor of Fallout 2.
Mothership Zeta, if it was never mentioned again in a a future game. Not hints to it no nothing, I would be happy cause to me it would mean it wasn't canon and not to be taken seriously like the Ghost in Fallout 2. It was there we saw it and it will never be mentioned again. I would be happy.
But it would be even better if Bethesda just said it we as fans would never have to worry about it again. Cause as I said before there's so much more they could do with it, all of it bad but hey they made MZ in the first place. The only thing I think that would keep them from mentioning it again in a future game is the amount of anger it created.
Throw it down the memory hole and not continue with it.