The graph does a really poor job supporting the conclusion, most obviously because it only goes back to 2016, the peak of boom times, it doesn't go anywhere near 2008 so why does the caption talk about that? Just this same graph alone going back to 1990 would be super eye-opening.

The other thing is it's showing first derivative, not absolute numbers, which is a very questionable way to derive "worst employment situation" in a field that has been on world-changing boom over the last 50 years.