I think you can certainly use Node as an example of much better developer experience. Even the difference between npm and yarn is fairly minimal, and there is a solid community 'default' in Yarn.
I think part of the reason we ended up with so many trivial libraries and dependencies in the Node ecosystem was precisely because it is so easy to create and publish packages.
I love Python as a language, but working with the packaging even just to install dependencies is like pulling teeth every time you start a new project - nevermind publishing packages yourself.
No it's not... 99.9% of the time, installing dependencies is a breeze. Packaging is where the issue lies, but pulling those dependencies down is painless. You run one command and everything works. Unlike say npm/node/yarn where 50% of the time after coming back to work on a project your node_modules is broken and you have to either reinstall npm or node or node + npm.
The problem we're talking about isn't "installing a dependency", the problem is creating reproducible builds across people and between dev and production. The secondary problem is managing dependencies over the long run (updating, transitive dependencies, etc). Ruby/Bundler does this so much better than requirements.txt by a long shot.
I think part of the reason we ended up with so many trivial libraries and dependencies in the Node ecosystem was precisely because it is so easy to create and publish packages.
I love Python as a language, but working with the packaging even just to install dependencies is like pulling teeth every time you start a new project - nevermind publishing packages yourself.