Most of these scripts were designed for a world where there was A Blessed Deployment Machine that acted as its own de facto centralized control plane. We're designed for a newer world where publishing is just another piece of your CI, so you need more features to handle concurrency control, distributed signing, incremental index rebuilds, etc.
To our knowledge, we have not found another provider who supports both of these requirements. It's not some amazing technical innovation, but it is one of those annoying paper cuts that builds up with all the others.
Debian and Ubuntu have been using them in production and "at scale" for decades. What are the "sharp edges" that you're trying to solve?
The other options is to DIY without tooling (essentially, write custom tooling as scripts or whatever), which is messy and full of pitfalls to the inexperienced.