Batteries begin to degrade the moment you start to use them. All phones do this. Apple does not have some sort of magical technology to stop it from happening. No one does.

I wouldn’t expect a device that’s likely being drained and recharged daily to retain full capacity after two years. To suggest that shows a lack of understanding in the basic physics of a battery.

No company, Samsung, Google, etc. will “recall” your phone for normal wear and tear items like a battery. If that’s what you’re expecting, you’re going to be very disappointed.