Diaper Pins

I needed some safety pins to hold up my maternity pants so I bought some diaper pins. I thought it was fitting in a weird sort of way. When I took them out of the package I noticed the warning on it read, “Keep out of baby’s reach. Contains a functional sharp point. Never leave a baby unattended.” How on earth did people diaper their babies before disposables if they can’t use diaper pins within baby’s reach? - And no, it did not specify “only when not in use” it simply said keep out of reach due to “functional sharp point”. As opposed to those sharp points that don’t function? And “never leave a baby unattended” - are you supposed to watch them sleep? I know they’re cute at that age, but watching a baby sleep could get really boring.