I don't think anyone wants warts. It is a fact that every technology has them, though. And also that every attempt to get rid of warts seems to introduce new, perhaps yet unknown warts. There is a kind of law of conservation of misery here. I think I now have said in a somewhat more clear way what the article is trying to say and without a title that is actually false.
I think you're conflating warts with bugs.
The point of the article is that warts are subjective. What one person considers unwanted behavior, another might see it as a feature. They are a testament to the software's flexibility, and to maintainers caring about backwards compatibility, which, in turn, is a sign that users can rely on it for a long time.
Nobody wants bugs. But I agree with the article's premise.
This makes me think of Alexander's pattern language- according to that framework one of the key components of beauty is texture. I wonder if our dislike of untextured experiences stem from an unease at not knowing where the thing is hiding its warts.