I agree. I started using wireless charging with my iPhone 15 Pro Max. After a year of use, I am already near the 80% max capacity.

My previous phones never even got below 90% in their lifetime.

Are you using high-power wireless charging? Does your phone heat up significantly?

As a counterpoint, I've been using low-power wireless charging (5W adapters) with my phones for the last several years (three phones at least). The battery degradation was minimal, I was able to pass my phone to my kid after 3 years of use with near perfect battery.

The key here is to prevent heat buildup.

Same phone 89% on 535 cycle count, manufactured july 2023, first used september 2023. Almost exclusively wirelessly charged every time.