I hope by "anyone" you're not referring to anyone who's seen the Savagegeese Youtube video of him talking about how the under body shows how costs have been cut compared to the Genesis G80, which the Stinger's platform shares some similarity with. I don't call not using double wishbone front suspension cost-cutting. I call that not asking me to pay for something that I don't necessarily want... Those who want it can pay the $10,000 difference for the Genesis and get it. I don't recall his video criticizing anything about the car's actual quality of components.
If you have legitimate concerns about the cars under body, such as bad rust-proofing, welding, or use of parts that aren't durable enough, then I think we'd all like to know.
For those put off about the "quality problems." I can say that math speaks. In Canada, the car is warrantied with a 5-year near-bumper-to-bumper warranty. That's two years more than most others. The power train is warrantied here for a fairly standard 5-year period, but it's warrantied in the US for 10 years. That's 5 years more than most. All Stingers come out of the same factory in South Korea. My mind tells me that US Stingers are not going to be extra durable with different parts. I also don't believe that Kia is just eating up 5 years worth of repairs for Americans out of their bottom-line. My mind tells me that they don't expect the car to break at the average rate and therefor it doesn't really make as big of a difference for them to warranty the US cars for longer. The benefit is that it helps them build their brand name in the highly competitive market that the US is.
Maybe some of us have never been in lemons, and maybe some of us have always been in lemons. I don't think I'm either. I think I just have a realistic expectation of what is the average, which is much worse than what most think it is. I think it's natural for one to think that they've got the worse and everyone else has gotten better, but that's probably not the case. If you think you have it that bad, then I agree, you've objectively got one thing that's better than the average to protect you from it: your warranty.