Generally Apple fully supports computer hardware for five years after it has been discontinued, then it becomes "Vintage" for the next two years where hardware repairs can be performed only as long as the necessary parts are still available. Seven years after an Apple computer has been discontinued, then it becomes "Obsolete" where there is no longer any hardware support. Sometimes Apple may assist you with some issues after that time, but support can vary by location. AASPs may attempt to assist people with "Obsolete" hardware, but again this can vary by AASP.
Considering Oct. 2016 + 7 years = Oct. 2023 before it becomes "Obsolete".
Seems Apple has not properly updated their "Vintage/Obsolete" article for this model laptop.
FYI, keep in mind any repairs performed while a Mac is considered "Vintage" may not have a full 90 day warranty because you may get the last available part installed during the repair, or the Mac becomes "Obsolete" during that 90 day period. It is one of the risks of having a Mac repaired while it is "Vintage". Most Apple replacement parts will be fine, but once in a while a part may fail prematurely. Just keep this in mind if you are considering any official repairs.