If someone compared me to a child molester, I probably wouldn’t give them my endorsement.
If you had even remote thoughts of running for POTUS, you’d probably not use your autobiography to confirm that you have a pathological mental disease. If, however, you felt obligated to let people know that, then presumably you’d be sufficiently honorable to accept the fact that your admission would be discussed.
Carson, at any rate, has that degree of honor. He blames the press for twisting Trump’s words, rather than Trump for discussing the pathological disease.