If your idea of shopping for dependencies is looking at the amount of GitHub stars and the quality of the documentation: you are going to miss some real diamonds in the rough.
It's about how he should best spend his time, which is finite, after all. Paid time even more so.
I evaluate projects by (1) actually reading their source code, (2) looking up their frequency of updates and release packaging, (3) the community interaction of authors and contributors.
The total amount of effort it took to write that blog post could have been spent on submitting PRs to improve documentation of various projects.