Yes, but there are people -- I've encountered them! -- who look on this as a way to show how "clever" they are, and consider it a good thing.

It's like Perl golf take to an extreme.

(admittedly, some of my co-workers and I have been known to golf our interview questions into ridiculous one-liners, but we do it for amusement value, not because we'd ever write production code that way)