It gives you a list of directly depended-upon packages. It doesn't give you a list of _those_ packages' dependencies, or _their_ dependencies, which funnily enough also get installed when you install your direct dependencies.

Plus I forgot to address this in my earlier comment: that visualizer only shows dependencies. By default it doesn't load any dev dependencies. You can confirm that for yourself by checking out https://npm.anvaka.com/#/view/2d/rollup for example - only the single runtime dependency on fsevents shows up, the dozens of dev dependencies Rollup has don't.

So yes, React Native does ship that overcomplicated graph of dependencies to all its users. I'll grant that at least _some_ of the code in those dependencies gets tree-shaken out.