“Further, many phones are now programmed to shut off power once the battery is full, even if it remains plugged in.”
Quoting the article they linked for you. Since you seem to have either missed this important bit or are being pedantic. Unless your phone is 10 years old, it won’t.
This is an urban myth: https://uk.pcmag.com/mobile-phones/146275/mobile-myth-does-fast-charging-ruin-your-phone-battery
The article literally says fast charging degrades your battery faster
“Further, many phones are now programmed to shut off power once the battery is full, even if it remains plugged in.”
Quoting the article they linked for you. Since you seem to have either missed this important bit or are being pedantic. Unless your phone is 10 years old, it won’t.
Fast charging generates more heat, and heat degrades lithium batteries. That is the issue, not how long the phone is plugged in