It's a statement of how litigious the country is. People want to help, but don't want to be sued for it. Look at software license agreements. They all say that the software is not guaranteed to work correctly.

I had a thought that when I sell me home, how helpful it would be to put together a list of the common fall and sprint maintenance. It would be super helpful to have that list. But then I thought what if something in there is not correct and the buyer comes after me for not properly maintaining it? So, if I do it, I'll have to get a lawyer to put together terms and a disclaimer.