[seancorfield]

Absolutely this, yes!

If you post a JS position, you will get 1,000 or more applicants, so it is a huge amount of work behind the scenes to filter this down to try to find the vaguely worthwhile candidates to interview.

If you post, for example, a Clojure position, you will get 10s or maybe even a 100 candidates tops. And they tend to be uniformly more qualified because niche tech tends to self-select folks who want to explore outside the mainstream.

Of course, a lot of businesses want to use mainstream tech because "the hiring pool is much larger", but the flip side is "the hiring process is a lot more work", because of the volume. So, we get a crappy hiring process because they can't scale up a good hiring process :(