If you are going for camping, just buy a GoalZero battery system from Costco. They are literally the same thing, significantly higher capacity models available and actually a proven/working product instead of this crowdfunded shit that's just going be some rebranded chinese device.

Not all camping is backcountry hiking.

I sometimes camp by bicycle, and this looks pretty transportable by bike trailer.

Sure. At the cost of many other things. Can you fit the appliances and the solar rig, all in the same bike trailer? Diminishing returns at some point.

Camping != backpacking. The pictures clearly show overlanding vehicles.