You are using the word "bad" equivocally. Bad as in "bad for your health" is one thing (no problem with that), bad as in "eating ice cream is morally bad" is quite another. What would the claim that eating ice is morally bad even mean?

All I'm suggesting is that we take care in our language and be up-front about subjectivity rather than mask it with objective-sounding reifications. This isn't an attack on morality nor its importance, rather it is an acknowledgment of the fact that such judgments are ultimately based on what we as individuals or as a society find acceptable or unacceptable (i.e., like or dislike). It is perfectly possible to have a strong sense of ethics without claiming that one's ethics are somehow objectively or empirically "true".