My guess is Microsoft didn't quit this lawsuit because it just didn't feel like litigating that day, they did to halt the contagion of a precedent of four or five figure legal decisions over their Win 10 upgrade.
Except this woman won her lawsuit. Microsoft dropped their appeal. The precedent has been set. You might need to prove exactly what the forced Windows 10 "upgrade" cost you, but you can cite this case along with your proof. (BTW, you can't just "quit" a lawsuit if you are the defendant, but you could try to arrange a settlement to avoid setting legal precedent.)
"Precedent" means you can cite something. You can cite an appellate decision. Something that happened in small claims court . . . not so much.