The bottom half of the Bundesliga (starting from 8th place already in fact) is utter garbage and painful to watch at the best of times. I would know, I have to watch one of those teams every week.
This has nothing to do with Hernandez btw. He came into a new league and took the step very well and was impressive overall in a rollercoaster of a season at Leverkusen. I'd still rather Vardy because of his much higher workrate, although neither is a patch on the Moratas and Higuains of this world