Value is complex. Helping people is good, but so is truth, and justice, and freedom, and beauty, and loyalty, and fairness, and honor, and fraternity, and tradition, and many other things.

I think your critique would have a higher chance of improving (in your view) something if you framed it as a concern about your personal values not being included adequately, rather than a two-line (plus an overused link that is begging the question as well) "refutation" of utilitarianism that also implicitly includes the controversial premise of moral realism.