In very small numbers. Car recycling/scrapping is a huge industry in developed nations. One that the big manufacturers support for a couple reasons. Main one being to maintain artificial price flooring. If used cars are expensive and harder to come by, people give in and buy new. The manufacturers knew this. But it didn’t occur for them to actively engage in such practices until Cash for Clunkers happened in the US.
Also, low income countries already get their cars from manufacturers people in western nations have never heard of. China, India, and even Iran export new cars to these nations. Options that would be easier to obtain and maintain than something like a 20 year old GM SUV never sold directly in that market.
The author’s guess at potential future concerns doesn’t seem reflective of reality around car ownership economics. Plus China is already getting new EVs to some of these markets at artificially low costs.