This. So much this.Lexus is more reliable no doubt. Statistic backs this up. But the issue here is the marginal difference. Germans are not unreliable, they just have slightly higher level of reported issues, which on average over the course of a typical 36 months ownership period may result in one extra visit to the dealer. In another word, it's not really a thing people care about. Lexus' bullet proof reputation is a selling point only for the super paranoid and they don't tend to buy a lot of new luxury cars. The original Lexus formula was value plus reliability. Now it is just reliability and that's not a selling point when Porsche is also at the top of JD Power survey.
On the other hand, Lexus is able to achieve the statistical margin mainly by offering outdated infortainment system. People have to live with outdated infortainment everyday and they can do the mental trade-off really well. Lexus is basically a victim of its own success. They've internalized the low JD Power reported issue scoring system that they have elected to not innovate. This is why Lexus has yesterday tech inside, a 15 years old ladder frame SUV going up against unibody CUV, and rather ho hum powertrain under the hood. These things help ES and RX stay at the top of the class for JD Power scores but people don't really care that much the marginal difference in reliability. Audi or Mercedes offering aren't catastrophically unreliable like they were in the 90s and they have fancy toys and endless turbo charged torque. BMW is so boring now, they are basically like Lexus so what is Lexus got to do to stand out? Lexus doesn't have that answer either BTW, which is why they are floundering.