Your original comment said you "didn't understand," not that you "didn't agree." The former prompts a very different answer than the latter, but you're acting as if you said the latter.
To understand it, all you need to do is understand that some folks take actions based on ideological beliefs, often to the exclusion of pragmatism, knowingly or not.
No, it doesn't. I really do not understand why one thinks this is a good idea. Yes, people are free in their beliefs and expression. But if they try to do this with a nonstandard license, it only means, that the software is effectively not published as open source.
The technicalities of the law are very complicated. Tiny mistakes can render a license unusable or just invalid. So, the best advice I can give any author is to stick to one of the well-known license, as this makes it very likely that the software can be used by others.
To understand it, all you need to do is understand that some folks take actions based on ideological beliefs, often to the exclusion of pragmatism, knowingly or not.