I don't understand the downvotes. This is a fair criticism. The author even points out "programs as pipelines" which is literally the UNIX philosophy. There are tools that already exist on UNIX-likes more people should use instead of reaching for a script.
I can sympathize with the author w.r.t wanting to use a single language you like for everything. However, after decades I've found this to be untenable. There are languages that are just simply better for one-off scripting (Perl, Python), and languages that aren't (anything compiled). Trying to bolt an interpreter onto a compiled language from the outside seems like a lot of work for questionable gain.
I can sympathize with the author w.r.t wanting to use a single language you like for everything. However, after decades I've found this to be untenable. There are languages that are just simply better for one-off scripting (Perl, Python), and languages that aren't (anything compiled). Trying to bolt an interpreter onto a compiled language from the outside seems like a lot of work for questionable gain.