Yet they carry Mercedes badges, Mercedes promotes them, and they've got Mercedes price tags.
Weren't you denying that Mercedes had gotten cheap?
All my statements are free for interpretation and usually you do a very creative job in interpreting them in the most interesting and entertaining ways
But yes, the A- and B-Class wear the badge but they aren't real Mercedes-Benz cars to me. Mainly because they were afterthoughts, to not let the competition make profit with cars of that size exclusively.
With the A-Class, Mercedes tried to offer an alternative to the Golf -- and failed. Badly. I don't even know, if they ever made profit with the A-Class. And the B-Class is a kind of middle-thing, nothing half and nothing whole to be honest. Let the French do the excentric cars with exotic technical solutions. Mercedes doesn't need that. Besides, the French always fail with it economically. Mercedes-Benz shouldn't look at what others do, they should be the trend setters others look at as an example.
On the other hand, the German car industry was only able to fight off the "Asian attack" with their own means -- the only Western country who managed to do that, btw. --, because Audi and BMW wanted to beat Mercedes in the 1980's and 1990's. As a result we now have three strong, competing premium brands and as long as they keep trying to top each other, it's also good for the rest of the car world.
So yes, in parts Mercedes has become cheap in certain ways. But as Jaguar fans also do not like everything that is/was sold under the badge of the growling cat (*cough* Ford Mondeo *cough*), Merc fans also don't have to love everything they come up with in crazy Stuttgart.
Actually it's quite easy to live with the inner contradictions of Mercedes, because under the three-pointed star you can also find vans, utility vehicles, trucks, military vehicles, ambulances, the Unimog, etc. No one ever complained about that, as far as I know...