i dont think you understood what he meant by them being ok profitwise but wanting new product. It is not that hard really, he said they are profitable but still want new product. Only thing shocking here is your interpretation of it.
I guess you expect Japanese executive to say something very American, like "while Lexus dealers are humongously profitable, they still want to make more money!"? hah.
And in general, Toyota's Japanese executives have always been very direct, Toyoda has been talking about Toyota problems from the moment he took up reins. It was always honestly refreshing in the industry that is very much show, and it is not only Toyoda. I met few Toyota execs from Japan when I worked for Toyota, and they were all frank and honest, maybe even drumming up the other team too much.
In general, i dont really understand this sense of defeatism when Toyota releases a new model. What seems to be a problem? Sienna was 11 years old, why would any Lexus fan get offended for it being updated to new platform? Only things older than some Lexus cars is... other Toyota vehicles. Sienna 11 years, Yaris 10 years, Prius v 9 years, etc, etc. Sequoia, 4Runner? Land Cruisers? At least both GX and LX got deep refreshes.