I said it once already in this thread and I'll repeat it.

If you chose to use DF then you should expect at least some of the time to run into poor players. That is just a reality of grouping with completely random people. Nothing you say or do will change that.

If you run into these players you have 3 choices. First is to Vote Dismiss and hope it goes your way. Second is to Leave group. Third is to simply soldier on and finish the dungeon. That is it. There is no way you can or ever will be able to force players to get better at playing or force poor players to not use DF. You can complain about it till the cows come home and it still won't change a thing.

Simply put, recognise your 3 choices and make your peace with whatever you decide. All you do by getting worked up over it is at best stress yourself out and at worse end up getting accused of harassment. By all means try and give other players advice if you think they can do better but don't expect people to always listen or take that advice.