Why extend to monthly Apple Care? If you don't, the money that you save could pay for your battery replacement once it actually does drop below 80%, which could still be months from now.
I do understand your frustration at being so close to the threshold for a free replacement, but rules are rules. Companies like Apple will sometimes toss customers a bone to make us happy and keep us buying their products, but they're not our friends, they're a business. If the battery is functioning within the parameters that they promised, they're not obligated to replace it.
That being said, what is your cycle count? If I'm not mistaken, Apple doesn't claim that the battery will remain above 80% for a specific duration of time, but for a number of cycles. For the 14 series, I believe they're rated for 500 cycles. If you're far below that number you may be able to make a case on those grounds, but if you're near, at, or have exceeded 500 cycles already then the battery has lived up to Apple's promise.
I do understand your frustration at being so close to the threshold for a free replacement, but rules are rules. Companies like Apple will sometimes toss customers a bone to make us happy and keep us buying their products, but they're not our friends, they're a business. If the battery is functioning within the parameters that they promised, they're not obligated to replace it.
That being said, what is your cycle count? If I'm not mistaken, Apple doesn't claim that the battery will remain above 80% for a specific duration of time, but for a number of cycles. For the 14 series, I believe they're rated for 500 cycles. If you're far below that number you may be able to make a case on those grounds, but if you're near, at, or have exceeded 500 cycles already then the battery has lived up to Apple's promise.