And the Urus manages to be even more flagrant brand engineering since it's an Lamborghini version of a Porsche Cayenne, which is just an Audi Q7, all based off an VW Touareg.
If there's a current Porsche vehicle hurts their brand, I think it's the Panamera. All their other vehicles are either sportiest in class or best in class, but typically both; the Panamera is neither.
But Porsche haven't gone anywhere near full BMW yet, and BMW is still cooler than Maserati and Lexus. I think Porsche's brand value is doing just fine. Not every car manufacturer needs to be McLaren/Ferrari/Lamborghini/Koenigsegg/Bugatti, and arguably, Porsche was never part of that group.