Lots of food for thought here. The song, in and of itself, would normally stand or fall on its own merits. But...if a phrase in the song that would be perfectly innocent to most folks turned out to also be pedophile slang/code for something abominable, that would have to be considered. Some songs are very closely tied to the particular songwriter, others are of a more general or universal nature to where it doesn't seem to matter who wrote them.

I can see liking someone's songs but disliking the artist to the point of not intentionally contributing to his income (e.g., buying albums). And I can imagine being so revulsed with an artist so as to be embarassed to even sing the songs, an egregious example being "Here's a great song I want to sing/play for you--it was written by the person who raped you/your spouse/your kid."

Since we each have different criteria and threshholds as to what is unacceptable, there won't be universal agreement about which songs and artists we would shun. But I think the answer to the question is, to paraphrase Rick, "absolutely".