This basically means that US beef industry is 1 disease away from being obliterated. Genetic diversity is still a requirement for the survival of a species.
You'd (and I was) be surprised to know that Aberdeen Angus sires impregnate dairy cattle for offspring that end up as prime steak. And this isn't just for burgers, it's for premium supermarket cuts such as fillets.
Also (in the UK anyway), most beef that is labelled as Aberdeen Angus only need to be 50% Angus (i.e. be sired from an AA bull)...check the small print on the packaging. It's actually rarer (pardon the pun) to see 100% Angus steaks on the shelves (say as cuts of fillets or sirloin) because their muscle structure is somewhat less appealing to consumers.
Anyway, he's still in the village at the moment and can ask any questions anyone has tomorrow.
What cut did you have?
[0]: https://www.youtube.com/channel/UCu9g5OmzcCpcJnmSYyHnIVw/vid...
My village pub is quite amazing, you meet all sorts of interesting people there. A couple of months ago I met a fund manager and author of "China, Trade and Power: Why the West's Economic Engagement Has Failed":
https://www.amazon.co.uk/dp/1907994815
...which is well worth a read. That too was an interesting chat.
Glib comments aside, the beef industry (particularly, but not exclusively, in the US) seem to have a death-wish for our planet.