Earlier quoted context omitted.
Sigh, that's an absurd way to measure. A "Hello world" is just that: a demo. No-one is: 1) actually making Hello, World pages that will go anywhere near a user 2) Using React in Hello, World pages (which they don't make) 3) Using Reactpack to build the React-based Hello World pages they aren't making
It's not absurd because: 1) Whatever you're making, you're starting out with 177 modules minimum if you use React + Reactpack. 2) See 1.
My Visual Studio install is easily at least 4GB, yet this doesn't matter to the end user as the packages produced are about 6MB total