Susceptible - yes, all platforms could fall to this.
That's why a strong leadership in a community, or subcommunities, works well. Python lacked this leadership, that leads to millions of half-arsed projects that compete... without moving the whole platform forward. It feels like NIH syndrome has permeated Python. Hopefully that's going to change
It is true that PyPi was designed before the author/project naming scheme popularized by github. Other than that I don't see a greater problem with name collisions in Python.