(time for another rust shitpost 🙃)
When packaging and using an app, I don't particularly care whether the developer had access to "associated type constructors" or "unboxed closures" or "if-let chains" when they were writing the app.
I do care if the build takes 30 minutes instead of 30 seconds, if the binary sizes are 10x of what's expected and reasonable, if the app vendors and bundles an ungodly number of random libraries with questionable origins & supply chains.