I know some German engineers who quit Tesla and went back to the traditional German car manufacturers. Working for Tesla was hell and you aren't even paid that well.
This is not racist. It's a very rude, most notably false and nationalist take – but not a racist one. We should be distinguishing between these two, as not doing so will lead to actual racism to go unpunished.
It's not racist, it's borderline nationalist but sounds like OP was originally from Germany themselves.
I've no idea about the productivity, but even if OP's statement was true, as an American I'd take a production hit to work less hours and be guaranteed sick pay and holiday leave at amy job and worker protections in General.
If you work your people like slaves and keep the majority of them poor, is productivity something to be proud of?
I've always been jealous of the European approach to WLB and wonder how we can go so very wrong in America when there are working examples of doing better.