It was sarcasm. The “pureblood” claim is ridiculous since they will get the same mRNA from the virus if they catch it. They get the vaccine mRNA plus a whole lot more.
The phrase also sounds remarkably similar to one from Nuremberg 1935 which hopefully the clowns don’t intend.
Apologies I missed the sarcasm. It is hard to tell these days, so many are proud ‘purebloods’ and yes, it absolutely similar.