> For all interactions, we shoot for the following targets on the hardware of our median user:

> 8ms Scrolling, animations, and fine-grained interactions such as typing or cursor movement.

I don't believe that. Either they use expensive powerful hardware or they measure performance only on start with empty documents. Because even Sublime Text starts lagging after long use and typing several pages of text. There is no way HTML page can be faster than optimized native code.

Especially with React (which adds even more overhead and which was never made for high performance) and these weird ideas:

> a CSS-in-JS approach that automatically generates atomic selectors so as to keep our total number of selectors minimal.