Are you suggesting it takes a psychic to foresee that comparing a black woman to an ape would garner an extremely negative reaction from the public?
She is not a "queen of insult" and she did not write a "one-liner". She made a derisive comment about the appearance of a person that dredged up negative and offensive stereotypes and dehumanizing remarks made about black people in general in an attempt to demean a person she disagrees with politically, present them as subhuman, and most likely indicate racial inferiority. Stop pretending this was some incredibly witty banter - it's a scummy, unfunny comment made by a hack.
It was directed at a black person. Are you seriously going to tell me you see nothing at all racist about comparing a black person to an ape?
Trump-haters didn't stop her show, the show's producers did. They swiftly realized that looking like they are endorsing racists and outspoken bigots wasn't the best look for them, and decided Roseanne was thus a liability and threat to their image. As a professional comedian and public persona, Roseanne should have been well aware of this when she made the comment. Apology or not, her producers made the decision she was just too much of a liability given her current and past behaviour and axed her show. Whether that constitutes the right decision is a question you should ask them, not "Trump haters".
Conspiratorial nonsense.