Yes, we can attempt to blame the makers.
The makers of the cars are to blame. They know this and have tried to hide their guilt. There is no need to "attempt to blame" them.
I would much favor banning the manufacture and sale of new diesel cars. That hits the automakers, not the consumer. Yes, it will take time to get the existing diesels off the road. A government/industry settlement to provide replacements can help tremendously with that. But we got to get the horse in front of the cart. Banning the use of the existing cars now is not the solution.
You don't seem to understand the magnitude of the problem you want to keep as an interim measure. These engines are killing people every year, in large numbers. They have prevented Europe from achieving the air quality that they have determined they need to achieve in order to prevent thousands of needless deaths from high NOx levels.
They could just replace each diesel car with a 10 year old gasoline car, and far fewer people would die as a result. You are essentially regurgitating the manufacturers' propaganda (minus the new car ban), probably with no realization of doing so. It isn't as if there is a worldwide shortage of automobiles, new or used. What is needed is the will to ban diesel engines, at the very least from urban areas. What
isn't needed is 10 years of excuses for delay following 10 years of criminally negligent homicide by VW, Mercedes, and the other EU diesel manufacturers.