There's a long tradition of licenses with a rebellious spirit, either deliberately or incidentally drafted in such a way that makes them hard to interpret. Before this "GLWTPL" there was the WTFPL, the JSON license, etc. People who choose such a license should be aware that they are making downstream adoption of their product more difficult. (For some authors that is surely the point.)
Our company has, in its policy, the allowance of licenses that fall into the OSI spec. This license, along with the WTFPL, are patently denied due to their joke licenses. Regardless of how amazing your code is, you look like a kid when you need to tag your code with one of these joke licenses. It loses a ton of credibility in the corporate world where open source is taken very seriously.
Programmers write things all the time that they wouldn't inflict on anyone else. They're written to get a one-time thing done and no more than that, however, they do sometimes realize that someone else might be facing that very same one-time problem, so there's no harm in at least letting other people play with said abomination.