The iPhone 6s was originally released back in 2015 which means that by next year, it will be 7 years old which by smartphone standards is considered to be practically ancient. This means that for the past 7 years, Apple has been supporting the handset which is longer than the majority of Android smartphones who usually get 2-3 years of major updates and up to 5 years for security updates.
Keep in mind that just because the iPhone 6s won’t get iOS 16, it doesn’t mean that the phone will no longer work, it’s just that you won’t get access to the changes and improvements that iOS 16 will bring to the table. That being said, with the phone’s hardware being so old, we’re not sure how well iOS 16 would run on the phone anyway.
In any case, if you are holding onto a 7-year old smartphone, we reckon it’s probably due for an upgrade anyway!