1. I don't buy that python is necessarily much better as general purpose. It has a lot of great libraries for some specific things, but its performance is worse and its type story isn't nearly as good as TypeScript's.
3. I have a few internal CLIs for use in scenarios that don't have npm available by default. It's very nice to be able to ship a single runtime and not have the folks downstream from me need to worry about node version + npm version + package installs from untrusty sources, etc. I can do that work so they don't need to, and give them a single runtime. I happen to not use Deno at the moment, but it's an appealing feature. Python has a comparable problem: I run into issues with some frequency around python versions and python environments. There are solutions, yes, but there are also scenarios where you want to bring your own dependencies.
I haven't used CodeArtifact, but is it something you can deploy on-premise?
3. I have a few internal CLIs for use in scenarios that don't have npm available by default. It's very nice to be able to ship a single runtime and not have the folks downstream from me need to worry about node version + npm version + package installs from untrusty sources, etc. I can do that work so they don't need to, and give them a single runtime. I happen to not use Deno at the moment, but it's an appealing feature. Python has a comparable problem: I run into issues with some frequency around python versions and python environments. There are solutions, yes, but there are also scenarios where you want to bring your own dependencies.
I haven't used CodeArtifact, but is it something you can deploy on-premise?