Because making it look good now is more important than providing adequate support later.
“Who cares if it doesn’t work? It looks cool, and these mindless sheep will buy anything. Wait, that video camera’s not on, is it?”
Instilling the self-confidence kids will need to carry them through all the failure they'll experience because they weren't taught competence instead.
Because there's nothing standing between you and your goal but a total lack of talent and complete failure of will.