Citi quietly devalues $120 Avis-Budget car rental credit on the Citi / AAdvantage Executive World Elite Mastercard

What is with card issuers quietly sneaking in devaluations of key card benefits without clearly letting their customers know ahead of time? (See: Bilt’s recent Rent Day devaluation.) As reported by Frequent Miler, the Citi® / AAdvantage® Executive World Elite Mastercard® (see rates and fees) benefit of an up to $120 statement credit on eligible …