Lexus has been relentlessly, and passionately, pursuing automotive perfection since the brand first upset the luxury car market back in 1989. Does that mean its current line has reached that pinnacle of automotive excellence for which it has advertised its intent for so long?
Of course not. The only perfection in this world is my wife - followed closely by my grandson (and, yes, they made me write that) - and it isn't realistic to expect flawlessness in any mere product, especially since your idea of perfection is undoubtedly quite a bit different from mine (which, of course, means yours is wrong...).
But they keep plugging away, redefining and refining their line and building some of the most reliable vehicles on the planet year after year.