Original sentence: He did say that the awarding of the prize to Kissinger made political satire obsolete, but has denied that he stopped doing satire as a form of protest, and asserts that he had stopped doing satire several years earlier
Edited sentence: He did say that the awarding of the prize to Kissinger made political satire obsolete, but has denied that he stopped doing satire as a form of protest, and pointed out that he had stopped doing satire several years earlier