This is tacit acknowledgement that Nissan has failed Infiniti as a brand, and the company itself is at risk (as alluded to before).
Running a luxury marque requires commitment -- 1) to supply that brand with the right products, and not allow it to rot (Hello, Stellantis!), and 2) selling and supporting those products with dedicated stores that help promote the intangibles, and separate those products, and their customer bases, from the mainstream hoi polloi.
But, of course, when such stores don't move enough product to sustain them, the book writes itself.
The OG Q45, G20 and others in the Infiniti lineup were developed when Nissan was an engineering-lead company, which was also reflected in its other products. While Toyota engineers were benchmarking the S-class with the LS, Nissan engineers took inspiration from the 7-series with the Q.
While it can be argued that it didn't make enough money with that formula, leading to the Ghosn era of cost cut designs, and people, at least the products were good.
Toyota understood, and Lexus has undeniably become integral to the company.
(Though, it too, has stumbled with a half-measured effort at the other end of the spectrum with Scion, which got no product, not enough separation from Toyota, and thus had no purpose.)
Honda didn't have any focus with Acura, beyond being "a nicer Honda" for their buyers to move up to, and it floundered for many years, somewhat directionless.
Mazda killed the Amati brand before ever launching it, but the work did leak out in a couple of their models.
Hyundai doesn't seem to understand either, and after wavering, still hasn't committed to properly launching Genesis as a brand, with its own stores.
Product is king in this business, and when there is nothing new, or good, to sell, the ship will take on water, before sinking.
You guys mixing up the Gs and Zs are thinking of the times when the
FM platform was the basis for the front-engined, RWD models.