I had to select the subjects in the photos above to bokeh everything but them. Their are acutally a whole bunch of options in Bokeh 2 that I haven't taken the time to learn how to use. I know I can select out what I don't want Bokehed and then go in and tell it to use a normal bokeh off a 70-200 2.8 IS II to a 400 2.8 to a 50 1.8 all in a single click, that really saves time if you have more than one to work on.
The fuzzy halo you see is because, I'm guessing, they applied the blurring to the entire photo, and then used layers and then masked back the foreground subjects. By applying blurring to the entire photo, they also effectively blurred the subjects in the foreground, creating a halo around them.
That's why you want to make a selection of the area to be blurred, and then have the plugin only blur that selection. I do that all the time with FocalPoint - it can work with selections. I don't think Bokeh 2 can work with selections but I haven't tried.