For me, it may be that the toilet paper roll needs to have the open end away from the wall. I don’t want to reach under the roll to take a piece! That’s ludicrous!
That or my recent addiction to correcting people when they use “less” when they should use “fewer”
It’s not that one’s better than the other, it’s just that the idiom was originally one way (“couldn’t”), and then everyone kept saying it wrong until it sounded right, just like with “literally.” Logically, you’re argument is unsound and historically incorrect, but trying to argue against the evolution of language is futile and ultimately regressive. So you say it however you want, old idioms are lame anyway.