It's not misleading, it's just an older meaning of the word "hacker" and one that still exists in the name of this site. Hacker's delight is a spiritual successor to the HAKMEM memo from the 70s. Guy Steele even wrote the foreword.
The term hacker has a long and storied history. A hacker is someone who makes hacks. A hack is a thing, typically a piece of code, which must be appreciated for its aesthetic beauty, regardless of whether it's particularly useful. [This term was obviously originally used sarcastically]. People strove to become hackers. It was a badge of honor.
In the 1980s the term "hacker" was possibly conflated with "cracker" by stupids in the media, and came to mean a software pirate or kid who broke into the Pentagon. But the proper meaning still hasn't been lost with the graybeards among us.
