Dude… players have already explained this to you, but you disagree with support from “some people” who seems to be still only just you.
It’s not a theory, it’s a fact based on actual observation from many players. And you can’t disagree with fact, you know?
As for the Gnome in explore, it’s mainly happened in Zeajin, as it’s a leak from its future class. Gnomes with no bag do sometimes randomly appear in explore in other places, but it’s quite rare.