A concerning paradox emerges from South Korea's healthcare data: while doctors prescribed antibiotics for childhood respiratory infections 31% less frequently over 17 years, total antibiotic exposure actually increased. This finding challenges conventional assumptions about antibiotic stewardship progress and reveals how prescription patterns can mislead public health assessments. The national analysis tracked 639,702 outpatient visits among children under 18, documenting how antibiotic prescribing rates fell from 80.2% to 49.1% of upper respiratory infection visits. Yet antibiotic exposure days per 1000 person-years rose by 1.88% annually, suggesting longer treatment courses offset the reduced prescription frequency. The data revealed strategic shifts in antibiotic selection: narrow-spectrum penicillin use declined while broad-spectrum alternatives gained ground, with macrolides maintaining steady usage throughout the study period. This prescription evolution reflects clinical decision-making adapting to resistance concerns while potentially creating new risks. The Korean experience offers a crucial lesson for global antibiotic stewardship: measuring prescription rates alone provides incomplete insight into actual drug exposure. Countries celebrating reduced antibiotic prescribing may inadvertently overlook rising treatment intensity. For pediatric care, this suggests current stewardship metrics need refinement to capture both prescription frequency and duration. The study's 17-year scope provides rare longitudinal perspective on how antibiotic practices evolve, though questions remain about whether these patterns reflect improved targeting of bacterial infections or simply shifted prescribing behavior without genuine resistance mitigation.