True, GPL is significantly more complex, as it makes a difference between usage and distribution, not to mention it tries to prevent loopholes, like Tivoization and patent threats. Complex is not necessarily worse, of course it depends on context. I prefer APL 2 if you ask me.

But what matters in this case are that both correspond to the open source and free software definitions. For such licenses it means that there are things you can rely on. Like you know usage is OK for any purpose, including commercial ones. You know that you can share it with anybody, you know that derivate works are OK, again for any purpose, even though you can have restrictions on distribution. Etc.

For me clear definitions are important because then you immediately know what you can rely on and ambiguous language is bad because then we can't have a meaningful conversation. Are generics complicated? No. Are Java's generics complicated? Yes, but that's only because it was added later ;-)