Which is what I use. But ST3 doesn't have the full power of a 20+ strong MS team behind it, but a single person (and another hired to help here and there), and so doesn't have the same momentum -- and it's getting behind in features as well.
I never kept tabs on the development effort on neither VSCode nor Sublime Text, but it was always my impression that much of the power either editor has comes from 3rd party extensions rather than the editor core. As such, I believe it was the hype around Atom and VSCode that drove people to write extensions for them, leaving ST behind.
>but it was always my impression that much of the power either editor has comes from 3rd party extensions rather than the editor core
A lot of it, yes. But VSCode also invests a lot in core functionality (in what in other platforms would be plugins). The Git integration is one such example -- or the ability to debug Chrome in it.