AGM batteries are they worth it on our older mopars or best left for modern?

I got a Yellow top repro in 2014! It still lives today, I keep it tended most the time!

No residue in the engine bay and have been very pleased!

What will happen when a new one is required? Your guess is better than mine!

I have asked if a few ounces of acid over the years will help it last longer and got many Stupid responses IMO! I fully understand the AGM principle, however it was charged with acid at some point!