Meh. This kind of thing happens. Mercedes-Benz had an issue with something like 220,000 '07-'09 C-class cars, where the taillight connector melted, burned, or actually caught fire. BMW installed a mix of ECE and US taillight assemblies on some number of 3-series (I think it was, but could be wrong) so the inner part of the turn signal lit up amber while the outer part lit up red, or vice versa. Toyota for a bunch of years put rear side marker light/reflectors on a whole bunch of vehicles (mostly crossovers and SUVs) that faded to pink and then white in short order...and made the same error on the US inner brake lights/ECE rear fog lights on the '97-'04 GS sedans, which also faded to colorless in an unreasonably short time. Volvo had difficulties with headlamp and front turn signal bulb sockets for awhile starting in the mid to late '90s. GM had that issue where the turn signal flash rate would not be affected (as required by FMVSS 108) by a failure of one of two front turn signal bulbs on each side of one of their mass-market sedans. And in the bigger picture, even Toyota has had engine problems and even Honda has had transmission problems.
There are far fewer defects on this order of seriousness in today's cars than at any time in the past. Modern manufacturing is vastly better informed and equipped than ever before to cost-effectively turn out faultless products. Take a look at an old Consumer Reports automobile test from as recently as the mid-'90s or possibly even later: they used to list what they called "sample defects", which were faults and problems and failures. Everything from "glovebox would not stay latched" and "left rear window squeaked" to "thin spots and runs in paint" "rain leaks" and "exhaust leaks" and "seatbelt lock didn't function correctly", "door latches were misaligned", "headlights were misaimed", etc. It was very common for them to find tens of defects on a single car. These were listed separately from drivability faults like hesitation, stalling, rough idle, etc.
They don't list these things any more because in the overwhelming majority of cases there is just nothing to list.
Getting something simple wrong, like a connector or a terminal or a piece of code in an ECM's programming, might be worth a roll of the eyes, and some sympathy for whoever has to fix it and whoever's accident or oversight caused it. It is very rare for someone to deliberately sabotage things by saying "I'm going to deliberately design/make/install a faulty component".
(But then again, some car companies seem to rack up bigger and/or stupider lists of errors...)
