That's not utopianism. The new jobs can't always be filled by the people kicked out of jobs. It really sucks to be them.
But it does mean that it's not irrational for people to want to automate other people's jobs. The net amount of stuff generated increases, rather than decreases.
This pattern may not last forever. There's already some thought that we've generated more than enough stuff to guarantee a decent standard of living to everybody (at least in the developed world) without working, and plenty more for luxuries if people choose to work. Even if we haven't reached it, we appear to be heading in that direction sooner rather than later.
That may cause a radical re-think at some point. And it won't be seriously delayed by making sure cartoonists have jobs.