Thank god its a silly article.
Otherwise flying a stretched,underpowered narrowbody as we try to compete with foreign carriers flying WB on those routes looks like a sure fire way to shoot yourself in the foot.

US airlines have tried to maintain capacity discipline to keep yields up. You can do that in- country,but overseas everyone is concerned about market share. And they will glut your markets out if you do not match seat supply with demand.

The reality is airport congestion at places like LHR will force everyone to fly bigger equipment .I do not see a 321 ever going across the pond to major hubs like LHR. And I doubt it could reach any airport farther east with any hope of coming back non stop.