[golem14]

I see nothing wrong with this. Most people are hardwired to be helpful to others, especially when no one else is judging.

[iopq]

If you ask a question usually few, if any, people attempt to help. When you outright say something wrong, everyone will be telling you the exact solution to your problem

[Brian_K_White]

This.

Some people do it out of generosity, but for some it's a special subset of passive-aggression, a way to say you're wrong and I'm better, but indirectly and deniably.

I'm pretty sure I do it for both reasons at different times and in different cases.

[oblio]

https://xkcd.com/386/