You do realize that those names and dates are submitted by individuals like yourself could be by a distant family member and not Family Search.
I use to work for ancestry.com
That is why I said that someone must have typed the wrong date numbers. It has happened to me but I catch it before I add it to my FTM. I take everything I find with a grain of salt until I can find real sources such as census data.
I think we may have found why all the mistakes are in the registry!