Sorry, don't know nothing about Glock.
I have, however, purchased (at least) 3 Taurus guns that were subject to the settlement and it didn't deter me from buying them. Of course with the Taurus guns, they work just fine whereas it sounds like yours doesn't work.
Interesting as well, that the Glock only has a one year warranty. I thought people were bashing Taurus when they switched, for a short time, to a one year warranty. The way people were bashing, I'd have thought Glock (and the other big brands) didn't have anything so "wrong" as a one year warranty. Imagine that!