Wasn't it called Aiki budo then?
But does it make any difference (or why does it make a difference) how Ueshiba's way was called then?
In the article he states Aiki jujutsu. The difference is Ueshiba changed 'everything' after the war and developed it into what was called Aikido, a name he was completely satisfied with.
It's important because no doubt many didn't like the changes and wanted to cling to the old ways and meanings of budo. Many even now.