PMs tend to have a lot of leverage, so a bad one makes a very large negative impact. A good PM is worth their weight in gold though. I think of them as basical

PMs tend to have a lot of leverage, so a bad one makes a very large negative impact. A good PM is worth their weight in gold though. I think of them as basically glue. They just help make shit get done. That could be helping co-ordinate between eng and design, doing customer research, managing expectations, etc. Whole range of things that different PMs do.