They'd be starting riots over the colours of the balls and the fact that some colours are missing which is a sign of systemic something, over who gets to use the ball pit and who does not, over the fact that the balls are made of plastic which is bad for the climate/the environment, over the connection between ball pits and slavery/colonialism/*-ism, over the absence of trigger warnings for those scared of balls or pits, over the stolen land on which the ball pit has been erected and many other similarly inane subjects.

They won't have fun no matter what because we're not on earth to have fun like the dour ministers who preached bleak sermons used to say. Now that Gott ist tot [1] there is no more place for those dour ministers so they changed their religion from Christianity to leftism where they get to preach their dour sermons to a new audience. Repent, sinners.

[1] Gott ist tot! Gott bleibt tot! Und wir haben ihn getötet! Wie trösten wir uns, die Mörder aller Mörder? Das Heiligste und Mächtigste, was die Welt bisher besaß, es ist unter unseren Messern verblutet.