Most consumers aren't replacing light switches or car batteries several times a day. That is why mechanics and electricians make the big bucks. And despite that, it is clearly marked (red/black, black/white) how these should go.
You don't think there are consumers everywhere replacing light switches and wall switches? It's actually one of the most basic simple and easy home fixes. Switches are like $.50 to $2ea too. Think again. Car batteries are pretty easy too. I see the point you're trying to make, but the facts still stand that as plain as black, red, white and green wires are so is the
pointy end of a stylus.
So please, if you can't put the stylus of a Note 5 away correctly, do NOT attempt to replace a light switch or car battery, no matter how simple it is. Don't rotate your tires and please don't fill up your own car with gas. Attempt the light bulb of a table lamp ONLY if you can actually read and stick to the proper wattage too.
Phone batteries, which is I guess a valid comparison, might be able to go in backwards. But guess what, it just won't work. It doesn't break the phone.
I wonder how many people drink slushies with the spoon end of those funny straws in their mouths? But hey, you're right, it won't cause them to spill anything.