[arcturus17]

Doesn’t the NYT do a lot of React too? From what I read in other comments Svelte was an experiment.

I think what people mean when they say “at scale” is they want to see a large codebase, with a large team working on it, where Svelte is the primary front-end choice.

[davidwparker]

The creator of Svelte (Rich Harris) works for the NYT. If you ask him, I'd venture to guess he wouldn't say it's an "experiment" as they regularly use it. I doubt his frontend work there is alone too, so I'd guess it's fairly in-use. But again, that's just my guess.