There is no definite proof of this reduces confusion. Changing containers to feed is only a matter of preference. When I had my BP's I fed them in the tubs, because my Rufous are living communal I put them in separate containers to avoid any accidental bites or them going for the same food. My yellow anaconda I had, I placed her in a separate container up until she was maybe 7 feet or so, but then after that point it wasn't the most ideal spot so I fed her in her enclosure.
If you can find a container you're comfortable with feeding your BCI in when they get larger then it's purely up to you. One reason I like to feed in different enclosures is because it gives me time to do maintenance and cleaning.