I must be an exception, and likely it is because I have no experience with SLACs at all, but my initial reaction to the premise was: "If you have found problems with all 18 of your long-listed candidates, dude, maybe the problem is you"
I read the article anyway and when I got to:
We were not interested in their many nods to cutting-edge research or their secret handshakes in the form of the latest lingo.
I felt like we were dealing with a defensive crank from a mediocre to poor school who felt threatened. So I'm glad I don't have to work there
Quick note: The author of the article is not at a small SLAC, nor did they find problems with all eighteen candidates. The committee was simply disappointed with a surprising number of them.
As for the issue of jargon, a graduate student in history who can't give a three minute explanation of their topic that a non-specialist can understand
should be dropped. As I read it, the author's main objection is not to cutting edge research, but to the candidates' inability to talk about that research clearly. The candidates should know who will be on the committee and how to talk to them. If they're not smart or seasoned enough to know this, they are not ready for prime time.
airball