False. You spoke about very old devices.
Last year and the year before we were speaking about how slow buggy and laggy were iOS 9 and iOS 10. Later on iOS 9.3 suddenly was the best iOS ever (when speaking about iOS 10.0), and this year is the same with iOS 10.3.3 considered as great. In a couple months all ofbthis will be forgotten.
[doublepost=1507457418][/doublepost]
The only iPhone that was affected was the iPhone 4S, and not to the extent depicted here (my wife used it for several months without much complaining. It was slow but usable).
I would have ceased support earlier for the 4S, but I'm sure in that case here people would have been complaining about how bad Apple was abandoning their beloved iPhone 4S

[doublepost=1507458075][/doublepost]
By common standards a 2013 MBP isn't such an old notebook, while a 2013 smartphone is very old (and is amazing it is still supported). So it is not exactly the same issue.