I have a bit of a "thing" about the excessive use of shallow DoF and pull focus nowadays. It is meant to subtly (I said subtly) direct the viewer's attention to a particular subject or point of interest. Nowadays it seems it is mostly used to darw the viewers attention to the fact that the maker has the equipment to do it and has read that it makes videos look more "film like".
I was horrified a week or so ago to see in the ITV (UK) series "Downton Abbey" oversuse. A conversation between two people and we're looking sideways on. There's a bit of distance betwen the two. Person A has the focus, the focus shifts to person B who speaks - all done very nicely. But then it comes back again!
This to me has the same effect as tromboning (zooming in an out). Please don't do it.