Nah all jokes aside, people who think dark RP is just a money grab have probably had bad experiences. It is true that most DarkRP servers do sell donation packages but you have to consider the fact that it costs money to run a server on top of paying for add-ons, web hosting, etc. Servers charge for cool stuff because it cost them money. I personally have donation ranks on my server but I don't use any of the money earned personally. It is strictly set aside for the server so should we ever want to commission some work or get new addons we have the money for it.
A lot of people do setup dark rp to get quick money but if a child is young enough to fall for that then they're not old enough to have steam in the first place.