[Brian_K_White]

It's the oldest trope since BBS's, if you want free expert information how to do something, just go on any forum and say it wrong, and 20 neckbeards will step all over each other to provide the most correct most efficient most elegant directions.

I'm guilty myself. It's a fine tradition I have no problem with. ;)

[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/

[zamnos]

https://en.m.wiktionary.org/wiki/Cunningham%27s_Law