The issue is that a lot of the users coming to play DarkRP/StarwarsRP are either kids or socially awkward/autistic(no offence) people. They either act childish in situations or just don't know how to act. It also happens that these players are given admin.
Garry's mod was already dead since 3 years when all these kids came over shouting: MY DARKRP SERVER, BEST ADDONS blablabla. Even if there are cool gamemodes, the game itself is dead because of these children...