I remember encountering this in LinkedIn groups.
I had joined a few (like The Swift Programming Language), and would see questions like "I have this problem , how can I solve it?"
Since (in at least one case) this was a problem I had easily solved, years before, I would provide a detailed, concise, answer, showing how to deal with it in a few lines of code.
My answer would get ignored.
Instead all these replies would show up, saying things like "I added the , and it solved the problem!". These would get voted up, and the original poster would actually engage them.
After seeing a few of these, I realized that LI groups are dumpster fires, and quit them all.