If they are slow in update, you complain. if they surprise you. you complain. Its like, if you eat rice, you complain, if you eat rotti, you complain. I trust Samsung, I love their Smartphones, My only complain is that they should give 3 major Android upgrades for S and Note Series, and atleast 2 for mid range.
I totally agree with you but its an policy from google only that they will allow other smartphone manufacturers to provide only two android upgrades and even sometime google gives permissions and the smartphone manufacturers provides extra update example-Samsung provided 3 android upgrade on samsung a5 2017
