[aytekin]

Reminds me of Firefox. At the time, Mozilla/Netscape was very slow. Firefox, a small and very fast version of Mozilla, came out and took over.

[Cartwright2]

React isn't slow.

[thecrazyone]

You're missing the point he's making. Preact is leaner than react. FF was leaner than mozilla.

React isn't slow (yet?), but it's not hitting any universal limits, there's always scope for leaner, smaller and faster software (yes it is, see benchmark).

benchmark: http://www.stefankrause.net/wp/?p=283

Edit: Added some reference benchmarks.