If it took ten years to find three problem Taurus semis, I'd say that isn't too bad. I own a dozen various Taurus handguns, some for 25+ years now. NONE of them has failed, and my PT92 is approaching 25K rounds, on the original locking block.
Then again, I don't consider the fact that I may have to drift a sight a "malfunction".
I have small and medium frame revolvers, and a plethora of various semi-auto models. I use them in teaching, and also carry them for CCW. I even have one of those "terrible" PT22s. Oddly enough, I keep it clean, and feed it CCI Mini-Mag, and it's gone through most of a case so far, and is in one functional piece.
I've actually had much worse service from S&W, Sig, HK, and Colt. I bought a new gun from each of these manufacturers, and not inexpensive models. The S&W failed on the first shot. The Sig failed between 50-75 rounds, and the HK fired groups like a Cylinder bored 12 ga. The Colt had a rear sight that you could watch move as you fired it. None of this was evident when inspecting the guns in the shop. So, why is it that people seem to think that it's somehow acceptable for old line manufacturers to produce such spotty QC, but Taurus is bad for the same thing?
As terrible as it might seem, there is an entire world of shooters using Taurus handguns that have never had a problem. There are many who simply aren't interested in the latest "I saw, or my friend......, or the guy at the gun shop said......" Internet Lore. It's like buying a car and listening to the fan-boys tales of woe about your choice.
In the 1970s and 1980s, people were bemoaning the "terrible" QC of S&W. They felt that the guns were over-priced, over-hyped, and should have been sent over there. Now, posters wax poetic over the guns S&W produced back then.
Yeah......OK.......that pretty much says it all to me.