It's in the title. Bikepacking is not commuting.
This is good for people like me who likes to go on road trips on bike trails. I dont have a car, nor a campervan, but I have a touring bike with panniers, and explore dedicated bike paths where I can find them.
But these can have multiple use.
For example, where I live there's a few disused railways that are now long distance bike paths. Locals are using sections to commute, cyclists in lycra are using them to train, and tourists like me are exploring them to go from town to town to town while camping along the way.
You're right about connections though. Compared to the road network, even my province which boasts the longest dedicated bike paths network of this kind, there's still a lot of safe missing links between towns and cities.