Toyota slashes worldwide production as semiconductor crisis continues to hit new car market – Car Dealer Magazine
Used vehicles make money for the car dealers rather than manufacturers, so the thought that a manufacturer would put out false news re production cuts in order to boost used vehicle sales is a nonsense.
It isn't just Car Dealer magazine which is carrying the story:
https://news.sky.com/story/toyota-slashes-production-as-it-becomes-latest-carmaker-hit-by-global-chip-shortage-12385230
https://www.cnbc.com/2021/08/19/toyota-to-slash-september-production-due-to-global-chip-shortage.h