I think people need to understand that a mangaka, no matter what he creates at a certain time, remains a project, and once the project is finished, he moves on to something else, either he stops, or he makes another manga.
and in the case of dragon ball, it's even more obvious: toryama had stopped making manga since 1995, at the end of dragon ball.
Since then, he's done a few oneshots to please shonenjump, but his life as a mangaka was over, and he continued to work on games like dragon quest and blue dragon.
so the case of dragon ball super, it's not him, he participated a little in the correction of drawings and other things but he's no longer the active mangaka of the 80/90s
(which remains a simple project for him, dating back 30 or even 40 years if we take into account the start of his manga).
even without taking into account his brain disease, akira toriyama on dragon ball is from 1984 to 1995, not dragon ball super
You have to understand that akira toryama and his image have been used in different ways to satisfy the manga industry, and this has exhausted him, and that the older he got, the more he forced himself to do things. ( things he himself has forgotten because it was 30 years ago and he had moved on. )
all this to say that we should be talking about akira toriyama when he was a mangaka (80s/90s on dr slump/dragon ball) and not 30 years later, when he'd stopped all that and wanted to enjoy a family life in his little country house, but circumstances and the worldwide success of dragon ball put a lot of pressure on him, even though dragon ball was just another project he'd finished a long time ago.