When I have published stuff in GPL, I would have had someone from (say) the Netherlands opening an issue asking "hey, can I use this library for doing so-and-so?". And I had to go and check so-and-so and check the again library and re-read the license and after I was not sure because I am not a lawyer and GPL text is fairly dense. Even if I was a lawyer, I would not be familiar with the legal requirements for someone from Netherlands.
One of the reasons I spend my free time doing open source is that I have fun. Reading legal text is the opposite of fun to me. So I moved to MIT. I did not have more of those legal questions.