Also, the more modules are in the core, the easier it is for people to use Perl.

The more modules in the core means that maintainance is harder, as part of the resources will need to go to maintaining the modules. Which means that bugs will take longer to fix - resources are limited. Which will make Perl actually harder to sell, and less easy to use. ;-)

But there is NOTHING at all that prevents YOU (or anyone else) to create a Perl6 distribution that include fifty thousand modules. In fact, there's nothing that prevents YOU from creating a Perl5 distribution that includes fifty thousand modules. (Except perhaps finding fifty thousand modules). If you think it's important to have a distribution that includes many modules, then go ahead and MAKE ONE.

I'm amazed how many people say we need larger distributions, but no one things it's important enough to make such a distribution him/herself. The "we should make" always means "someone else should make".