There are quite a lot of people working on better packaging (look at the Python discourse forum, for instance), but this is not really a topic that Guido has got involved in, at least in the time I've been paying attention.

But with or without a BDFL, one packaging tool to rule them all is a pretty tall order. The needs of a package like scipy, which incorporates C & Fortran code, are pretty different from something like requests. And different communities using Python have their own entrenched tools and techniques. It takes more than someone saying "Foo is officially blessed" to shift that, even if everyone respects the person saying that.