He probably didn't feel like going through the hassle, tbh. I'm sure once Austria offered, the process was a million times easier.

I'm not criticizing Austria, Germany makes it extremely difficult to become a dual citizen. I eventually had to denounce my citizenship with Germany in 2005 because I just couldn't deal with the endless justification of trying to get grandfathered in to certain policies and protocols that came into play after I was born so that I wouldn't be penalized by the country.

Eugh. I get stressed thinking about it.