Could also just be an rdrama troll who thinks it's funny, but the "i'm only pretending to be retarded" schtick is certainly a common method of infiltration. It causes people to lower their guard. Then to your point they'll sometimes have another puppet arguing with them to push the position they're trying to crack. I recall not too long ago we had the guy who would occasionally spam posts about China nuking the US or the US government nuking right-wingers and we just need to give up - then one day he forgot to change accounts and was posting pro-Trump boomer memes.
Could also just be an rdrama troll who thinks it's funny, but the "i'm only pretending to be retarded" schtick is certainly a common method of infiltration. It causes people to lower their guard. Then to your point they'll sometimes have another puppet arguing with them to push the position they're trying to crack. I recall not too long ago we had the guy who would occasionally spam posts about China nuking the US or the US government nuking right-wingers and we just need to give up - then one day he forgot to change accounts and was posting pro-Trump boomer memes.
Snerk