Income Inequality and Household Size

Those who complain about income inequality generally disingenuously use household statistics without disclosing that that measurement itself is the source of much "inequality". Households in the top quintile have FOUR TIMES the number of earners in the household as those in the bottom quintile. Do you think maybe that has a big effect on income? When earners marry and form a household unit are we supposed to be incensed about that? Should they be punished for doing so?