Elected representatives are not mobs. Equal protection comes from a culture, not a government system.
A government system lacking equal protection disincentivizes the populace and culture quickly devolves.
Government can pass laws that are supposed to apply equally, but only citizens can actually apply them equally. Government can pass laws that are unfair, but only citizens can use those laws unfairly.
You give no weighting to the structure of the law or how it is perceived? Surely laws that protect more equally and those portrayed as fair are far superior to those that are seen to encourage the citizenry to a) gain unfair advantage from the law or b) provide negative incentives that result in pushback, underachievement, etc.
It's irrational to expect any citizenry to uniformly conduct their lives in some Utopian way that applies each law equally and to achieve full potential. Once an advantage is exploited, the domino effect sets in as others want to get theirs too.
People who are starving don't feel free.
This is comically at the bottom of the emotional barrel. People who are starving don't feel the fulfilled pleasure. People who rely on others for their daily sustenance are not free.
It's not relevant to the USA.
Tell that to African-Americans, Irish-Catholics, Mormons, and 20th century Japanese.