That’s not how it works. There is no single centralized decision. People write packages, some people use them, some contribute. Some libraries emerge as de facto standards, because they are good. If you want PyPlot to be one of them, you should not condition your contributions on some vague community decision; just start contributing now.
Ideally, I think that many in the Julia community would prefer a native plotting library. It’s just that they also realize that this is an enormous undertaking, so they are OK with other solutions in the meantime. All other solutions have issues, but they are different ones, and Plots.jl gives you a choice so you can work around them most of the time.