Why are people shocked by this? it's a car with mechanical components, that are not failsafe.
It's not that a potential problem has been highlighted, it's about how the company involved goes about rectifying this issue with the minimum fuss and disruption.
Now consider how Renault have responded or lack of response to something far more serious than this Lexus issue. The one where Clio bonnets decide to release from their fixing and cause potential life threatening accidents. Even with the help of Watchdog, and indepedent specialist reports, they still would not recognise it.
Me thinks, if that was Lexus, they would have conducted an indepth study of the situation and recalled cars accordingly.
Caeser ruled with an iron hand, then with a wooden foot and finally with a piece of string.