Yes, that's why the statement "Reactive programming is useful" is interesting to me, and "You should model your problems in Excel" is not. The article makes both points, and I disagree with the second.

This specifically is nonsense in the article:

> From there, you can calculate literally anything, and transmit not only the results of those calculations, but the actual environment itself, to anyone in the world, and expect that if they have a computer, they can replicate your results.

I certainly can not expect that people I'm interested in have Excel. I don't even have Excel.