Please don't spread misinformation. Just because your carrier isn't pushing updates to you doesn't mean Android phones don't get updates.
I would like to find a carrier that does actually push updates. But this was a specifically branded Samsung update. 6 months after they should have
Carriers should not be responsible or even allowed to push updates outside of very limited reasons. Samsung made the phone they should be legally required to actively update it
Sadly if you buy an Android phone, don't ever expect it to get updated. You might get lucky, but don't expect any ongoing support