This seems like too obvious a mistake to not have been noticed for this long though.
I think this same thing is happening with ML. It was a hiring bonanza. Every big corp wanted to get an ML/AI strategy in place. They were forcing ML in to places it didn't (and may never) belong. This "recession" is mostly COVID related I think - but companies will discover that ML is (for the vast majority) a shiny object with no discernible ROI. Like Big Data, I think we'll see a few companies execute well and actually get some value, while most will just jump to the next shiny thing in a year or two.
In Japanese 適当 is supposed to mean "appropriate, proper", but in practice it almost always means "unserious, sloppy, careless". Not sure how that came about.