"Uncle Tom" is a critique of the actions of black people relative to other black people. White people, as a class, are the oppressors of black people and cannot legitimately judge the behavior of black people towards one another. White people, as oppressors, should not critique the behavior of black people, or at least not using extremely charged terms like "Uncle Tom" or "House N*"

Some background context

https://en.wikipedia.org/wiki/Uncle_Tom

Also this extremly based criticism of the novel;

"Uncle Tom's character is sketched with great power and rare religious perception. It triumphantly exemplifies the nature, tendency, and results of Christian non-resistance. We are curious to know whether Mrs. Stowe is a believer in the duty of non-resistance for the White man, under all possible outrage and peril, as for the Black man ... [For whites in parallel circumstances, it is often said] Talk not of overcoming evil with good—it is madness! Talk not of peacefully submitting to chains and stripes—it is base servility! Talk not of servants being obedient to their masters—let the blood of tyrants flow! How is this to be explained or reconciled? Is there one law of submission and non-resistance for the Black man, and another of rebellion and conflict for the white man? When it is the whites who are trodden in the dust, does Christ justify them in taking up arms to vindicate their rights? And when it is the blacks who are thus treated, does Christ require them to be patient, harmless, long-suffering, and forgiving? Are there two Christs?"