Not true IMO.
You completely have the ownership of your words and speach, if you are speaking to a group of people, you can say whatever you want. But after you said that, you can't erase that from their minds, thoughts or memory, but they still are your concept, that you Choosed to share in first place.
This is why I said, probably knowing you could not delete, we should take more responsibility of what we wrote. 🍀☯️