How a cruiser loss could have changed Invincible doctrine

What would the loss of Veinticinco de Mayo to a British cruiser have done to carrier doctrine?

It would have focused attention on task-group screening and layered defences, probably producing larger, better-protected Invincible-class ships.

If a retained Royal Navy cruiser had sunk Veinticinco de Mayo, the lesson would depend on the weapon used. Gunfire would expose a failure to screen the carrier from surface attack, while missiles would drive stronger layered air defence; either case would encourage larger Invincibles with more defensive space rather than discredit carrier aviation. The likely criticism would fall on the task group's protection and composition, not on the mere existence of a carrier. The counterfactual asks whether the loss arose from the platform, its escorts, or its defensive systems.