> In NYC for example, there's been a large uptick in teen shootings, many adjacent to schools, and a lot of it involves the idiots posting on social media before & after. (emphasis mine)
“Spouting off” is an idiom that can also mean “speaking without a filter” and that’s what OP meant in this case.
“Spouting off” is an idiom that can also mean “speaking without a filter” and that’s what OP meant in this case.