Over at numpy we have a PR to provide unversal2 wheels via cibuildwheel. It is not clear to me that this is a needed package. There is a bit of discussion on the PR, with the only use case packaging apps with something like py2app. I opened an issue there, the main developer did express some desire for universal2 packages.
What do people think? Is it worth the CI churn to create universal2 wheels? Will macOS x86_64 fade away so this becomes a non-issue? I fear that once NumPy begins distributing universal2 wheels, other projects will feel required to, which will add a fair amount of CO2 to the atmosphere.