Vim is charity ware actually or at least that's how it was qualified when I started using it. Most of the long time vim users I know have donated several times. Vim and Emacs also have shit loads of plugins, which can make them behave just like Atom or VSCode so as usual I think it's just a matter of preference.
I use OSX at work and GNU/Linux and Windows at home. The only issue I've had are native modules but with msys2 I've usually been able to solve them 90% of the time.
I end up uninstalling it quickly (after 1 try), those ads in apps are really annoying for the user.
It's not the developers fault, but the ad system on either Android or iOS are really annoying, even if the app has all the features, for me the ads kill it.
On this MacBook Pro (MacBookPro12,1) i7(3,1GHz) 16GB of RAM, 512GB SSD ... it takes less that 5 seconds which is way to long for me. If that's ok for you no worries, but you can't say it isn't slow.
Atom's installer is a huge download, and the editor is much slower ... It also consumes much more memory and written in coffeescript. Takes a long time to start up ... just a few things on the top of my head.
It's a great initiative though so that's already a good point.
I usually browse the docs when starting with a new topic; the dartlang website has tons of stuff (and the articles are usually kept up to date), it's quite easy to get started.