There is a hype going on about “bokeh” in the photo boards on the Internet.
What is a “good” bokeh, what is a “bad” one? I’d say it all is a matter of personal preference. For me, bokeh must be creamy, velvety, others prefer the very special bokeh of classic lenses such as a Meyer Trioplan 2.8/100.
Anyway, here you can find a very good article on that topic.