The vast majority of the current wave is being driven by airlines hiring aggressively to replace early and age 65 retirements during the covid lull. Raising the age does very little as long as that continues to be the case as projected retirements are a relatively minor influence in the current hiring and movement. Why take on the added long-term costs for what doesn't even amount to a bandaid fix? I find it hard to believe that any CEO of an airline whose attrition is primarily retirement-driven supports this.