You make an unsubstantiated claim that such warnings are done because one needs to be a nanny.
Unsubstantiated? Of course they are nannyish. Those posts offer nothing but admonishments based on an unfounded claim that the posts in question have created legal problems for the poster.
Okay...since he opened that door: has there EVER been a substantiated case where a narrative forum post that recounted a first-person experience which involved a firearm ended with a conviction or any other legal problems? If there has, please cite them.
Until then, his admonishments are nothing more than an increase in the noise to signal ratio of the original post's asking for forum members to relate and share their personal experiences.