Re: To be fair...
To be fair, it would be nice if Samsung implemented a feature once found on Sony phones: stops the charging once the battery reaches a user-specified level, eg. 85%.
Apparently no app can add this feature to Samsung phones without rooting. I have considered adding a shut-off timer in-line to a usb cable, but that's more so I don't deplete power banks when camping etc.
Sony, Apple and Toshiba laptops, and likely some others, also stop short of charging to 100% but the option is presented and managed differently. Certainly I've known MacBooks that still have a usuable battery after years of being left plugged in, in contrast to my budget Dell laptop.