Of course this is just a toy example. But suppose you had a different task that is I/O bound, like processing terabytes of jsonlines files.
The argument is rather the following: common knowledge is that it’s not worth optimizing the code and that programming languages don’t matter, because the IO is too slow anyway. This fizzbuzz shows just how bad we are at IO compared to the optimum. So if we were to improve the IO, then faster processing would also make a difference. In this case you get an improvement of 179x compared to Python, i.e. your laptop will do instead of multiple clusters in the cloud.
The argument is rather the following: common knowledge is that it’s not worth optimizing the code and that programming languages don’t matter, because the IO is too slow anyway. This fizzbuzz shows just how bad we are at IO compared to the optimum. So if we were to improve the IO, then faster processing would also make a difference. In this case you get an improvement of 179x compared to Python, i.e. your laptop will do instead of multiple clusters in the cloud.