To the contrary, I don’t think it is subliminal training.
Children (and their parents excited in the anticipation of their kids fun and cuteness) thinking, planning, wishing and wanting to dress up in the characterization of their idol, looking ‘scary’, or in the case of my grand daughters being the prettiest princess - bunny - or chipmunk they can be. Their reward for this ‘work’ is some candy.
The celebration is RUINED by those leeches that don’t even dress up as anything, hold up a pillow case, and can’t even say the words, or even say thank you in English...
I’ve had it with them. I’ve supported their parents for years - I’ll not continue it with them.
Personally, I think Halloween Trick or Treating should be for children 12 and under only.
Once they hit 13, they should be forced to hand the candy out.