I feel it's quite off-base to associate the quality of a car to a country. The quality of a car is a statistical quantity that's mostly related to a specific model of car.
There are at least 3 wrong insinuations in the above post.
1. Volvo engineering is still mostly based in Sweden. Geely has mostly not touched it. So it's still Swedish -- thus it is still Swedish quality and safety. If it has gone down, then it's Swedish quality and safety that has gone down.
2. Many Chinese cars are now high quality.
3. That countries are correlated with quality is a lazy mental shortcut. Many Mitsubishi are not high quality, despite being Japanese.
Also the Volvo EX90 (in the article) is made in Charleston SC.