One of the best pieces of advice about software engineering as well.
You may not be able to remove anything, but that doesn’t mean nothing needs to be added, ergo it’s not perfection.
It is not unlikely that a decent number of the intended audience will have grown up that "perfection" is equated to having everything, with nothing left to want. New parents especially would have feelings of inadequacy when they are trying to be "perfect" for their kids.