I know and if you pause and think its also somewhat contrived.
Right is if you're camping, is that car camping or backpack camping? If you're backpack camping then you're counting ozs and cubic inches, the Powercore II 20000 is not the best in this regard, the Powercore 10000 is best on weight and size when also considering price. If you were off-grid then carrying two Powercore 10000 is going to be more reliable than one Powercore II 20000.
So the downsides of earbuds is you are more disconnected from the outside world, if anyone was to be attempting to walk past you then you risk not hearing them. A Soundcore Nano would be more likely a safer option for hiking.
Mention of swimming and yet the product is a big speaker you could not actually use when swimming. It is not waterproof. Useful would be a waterproof pouch to keep your mobile dry with you when swimming.
In all the other photos you show lots of people, so would not the Powerdrive 5 so to give 5 lots of 2A to leave the car with lots of charged devices be better? The Turbo mentioned makes a corner case best sense when you have SHORT times in a car and need a fast recharge. By definition a road trip is a long time on the road, so more ports is more appropriate than a rapid recharge powerpack.