I don't want to defend Haftar, but choosing between Erdogan's side and whoever else, whoever else is more humane and can be trusted or at least anticipated than an Erdogan.
Does Erdogan support democracy? He's the absolute autocrat in his country now after consolidating all the powers in his hands and increasing it more, so to choose between a national army of any country and a collection of terrorist groups 'defending a promised democracy', it doesn't take much to decide.