It’s all the same to me. The cars are designed and built in Britain/Sweden, they feel British/Swedish - and they might not exist in their preserved form without foreign capital.
I’ve got used to foreign ownership as a fact of life. If China has spare capital, they’re bound to be major investors, just as oil-rich Arabian states have been major investors. I may have doubts about some countries - but then they’ve often had reason to have doubts about mine in the past.
There’s also a lot of cooperation between Geely (owners of Volvo) and Mercedes. Geely are the largest single shareholder in Mercedes. It’s the way things are.