For our dishwasher you have to give everything a hand wash before it goes in anyway so it's a bit of a double whammy. It only works brilliantly if you crank it onto full temperature and use those fancy tablets every time which costs a bomb.The assumption made by most articles is that you just keep the water running to rinse all your crockery and glasses which is mental. Just fill the bowl up and start with glassware first. They also assume that you are just washing crockery, no pans, cooking dishes etc which use up lots of the space in the dishwasher.
Anyway all that said, dishwashers are convenient.
We use Aldi tablets and run the dishwasher on eco mode so I suppose you get what you pay for....