If a person is truly uneducated and stupid, I have pity for them and help in whatever way that I can but most that write terribly are just lazy.
Tolerating bad behavior sure seems to encourage more of it.
Uneducated and stupid are not the same thing. Not even similar.
Tolerating bad behavior is referred to as erosion of standards. It is a bad thing in many instances, such as safety. But somebody not being literate can be the result of many different situations.