Am I childish because I like playing Fortnite?
No, there are enough adults to play that.
You can play whatever you want as long as you enjoy it.
I personally only know childish people who play it actively, but it doesn't automatically make you childish
No you can play what you want, I play it too and it's very fun
If you're not shouting at random people because they don't do what you want to hack us all who kill you, probably not
That… I said that?
Many will tell you that it is, as many associate the game with younger children who yell at you immediately if you say you don't like the game. But ultimately it is important that you have fun yourself.
I now only know childish people who actively play 1-2 years ago it was different or I was just childish 1-2 years ago