I had parents complain about Tball one year. Nobody would help me (it was all volunteer) and they wanted skills type stuff like I had done in the past. I couldn't do anything but play games since there was only one of me. Every day I would yell and ask if there were any other parents that would help, all sat in their lawn chairs.Youth sports coaching. I'm bad at it, but I'm amazed at how few parents actually will do it, even for kids at really young ages where specialized knowledge of the game doesn't really matter at all.
I one time had another football coach barking with a parent from in the stands from the other team. Had to tell him a coach doesn't do that crap. It is bad out there.