you're assuming zuck or jobs kids have anything resembling "normal" children lives

The key message that poster before tried to convey was that they themselves do not believe into their own products, not that rich kids are privileged royal kings today. This ties into e. g. Facebook trying to addict people into using it - infinite scrolling as an example. The latter can be quite a problem on youtube or people using smartphones while riding in a subway, jumping from pointless video to pointless video - this is quite addictive.