I thought it was quite funny. The problem is that given what Ywach managed to do this chapter, first with Ichigo's bankai, then with Ichigo's horn, he could've just taken off Ichigo's head and be done with it. Without a plot device like "I grow stronger the more my opponent despairs", it'll just look like the idiot final boss who, by playing with his food and out missing the opportunity to kill his pray when he could.