After taking some time to process it I think this may be the most influential death in media in some time. There have been bigger names who have done bigger things, but Toriyama basically laid the foundation of a style of anime/manga that multiple generations now have grown up on.
If you were a kid (likely boys) in America from the year 1998 onwards when you got home from school you grabbed your snacks and you watched DBZ on Toonami. That encompassed your childhood right there. You saw Goku go Super Saiyan. You spiked your hair and pretended that you were ascending. You did the motions of the Kamehameha or the many other special moves. "Next time on DRAGON BALL Z" was something you said out loud to your TV.
Toriyama did that for people. That touched way more than just the modern nerds. Because even if they grew out of it you have multiple generations that have fond memories of the DB franchise. People who went on to movies, sports, novels, comics, etc etc. you can see his influence in all of it. You forever saw parodies of the spiky hair on power-ups. You saw the beam attacks and the back and forth struggles using them. It goes on and on.
The modern landscape of Anime and Manga does not look like it does now without Toriyama. He was a foundational force for the modern media landscape for animation and manga.
RIP to an actual unexaggerated legend. We may never see someone like that again.