The differences between these two things are people are people are either doing it to themselves, or others in the community are responsible.
All I was saying in the OP is that people don't need to clarify that they edited for typos because there's no way for people to know you edited your post.
It's all well and good to say "these people need help", they surely do, but the point I'm making is that there is also something we can do, if not for them, for the community generally.
In any case, this is not a petition to dictate anything, it's an appeal to be better to each other, because downvoting everyone who has a different opinion contributes to a bitter community. How much it contributes is speculative, but the value cannot be less than 1.