React does have a bunch of legacy baggage holding it back, definitely from a performance angle. But I think a major part of the issue is just the fact that React _is_ so popular, with that comes the inevitability that the majority of people using it aren’t all that experienced. It’s relatively easy to build a React app that performs pretty well if you prioritise performance, though not as easy as something say Svelte or Solid, but getting performance to be prioritised and rewarded is the real battle —- as mentioned in the article itself.