That's true, but for most packages, that's not really an issue. I.e. there might be a tensorflow library, but there is no libnumpy or libpandas, as far as I know.
As I also mention in the blog post, if you set out to create fundamental library software like FFTW, you should indeed use a static language, and Julia is no good.
As I also mention in the blog post, if you set out to create fundamental library software like FFTW, you should indeed use a static language, and Julia is no good.