Samsung deliver to the market the S8 mobile and all their family. Their 2017 flagship deviceis is outdated after only two years and Samsung don't want to upgrade their software to Android 10.

As a comparison Apple usually with more than 3 mayor updates, but Samsung usually at most  support 2 making their device outdated.

We like to request Samsung to upgrade device at least to Android 10, due that their hardware perfectly support this software. It were an expensive device that could be maintained updated.