I packraft, canoe, sea kayak, and river kayak. For the 14 years I lived in Minnesota, I did an annual two week canoeing trip to the BWCA. I believe a canoe is the ideal craft for most of that environment. For all of the routes I used over the years, there were numerous short portages each day and the wind wave heights, primarily determined by fetch, were small. The difficulty packing and unpacking a sea kayak and negligible wave heights, negate the benefit of a sea kayak. A packraft is a displacement hull with a very short water line length; this limits the practical cruising hull speed to about 2 mph versus 4-5 mph for a canoe or kayak.
The BWCA environments where the packraft is better than any other alternative are: where backpacking accounts for a substantial portion of a trip, white water rivers (no space to carry camping equipment in conventional WW boats and canoes require heavy custom spray skirts), or where public transit is an element of the logistics. That said, I believe you could select specific trip routes in the BWCA that leveraged all of the packraft’s competitive advantages versus other water craft options.