Asking too much of someone is a species of cruelty; so, too, is asking too little.
This is the core problem with egalitarianism: they do not recognize the category better on an individual level, on the only level in which excellence can POSSIBLY be deployed.
The tyranny of low expectations is just one more flavor of the moral monster I aggregate as Leftism; it is just one more expression of concealed, vicious Sadism