Apple had a long list of extended warranty issues in the function key model. I know you let this slide a bit but I hope that won’t be your undoing ;-{
As soon as you got the system back and it failed again, I would have made the trip back to the Apple Store to complain, I know a waste of a day!
As the issue is documented from day one (you still have your paperwork). You should still get your system fixed. Go back and speak with a manager with the paperwork in hand and don’t take no as the answer! Ask to speak with the regional support manager and keep moving up! Remember its the squeaky wheel which gets the grease!
Here’s one issue: [https://www.macworld.com/article/3320456/13-inch-macbook-pro-ssd-service-program-faq.html|13-inch MacBook Pro SSD service program FAQ: Everything you need to know]