Operating function matters in a full-size pickup because its usefulness depends on switching between passenger transport, open-bed cargo, and towing without exceeding its limits or making ordinary travel unnecessarily difficult. A roomy cab, convenient bed, and strong powertrain help with different tasks, but they must work together in the configuration you actually own.
For many owners, the important test is a mixed week: commuting, parking, collecting supplies, carrying family, and occasionally attaching a trailer. The truck should handle that whole pattern. A capability that exists only with passengers or normal equipment left behind may not serve the trip you intend to take.