Games are for every one (well some games are for mature audience but that's not the point).
I like easy games because I don't want to be punished for not being good enough after a job week.
I like thinking/strategy games like chess because I like to challenge myself.
I like a lot of other genre for different reasons.
But not a single one of them should be depicted as "for little kids", not even sokoban, tictactoe, etc... because that's just not true.
Games are for entertainment. You're either entertained, or not when playing the game. It's completely subjective. It does not depend on the fact you're a kid or an adult.
Where they see something they don't understand, and assign an "alien" status to it. They might as well be saying that BOTW is for Klingons, for all the rationality there is behind it.
In that poster's vein, we might as well refer to all GTA players as criminals and thugs (of course they're not!). When in reality, the player base of both GTA and BOTW has a massive overlap - both games are largely played by the same people. "Computer gamers".