I feel like this is a bad take but more importantly, nothing you’ve said answers the main question. Why would someone be happy to remove all of that art from people?
In every example you gave, nothing was being removed at any point, they were just being moved around and not even always… Historical record painters got replaced with the new profession of photography but people who can paint extremely accurately still exist and are now an extremely valued skill.
The question above is not about that process, one which is as old as invention, but more about the joy of removing those jobs.
Why are some AI people so incredibly overjoyed that artists are no longer making money? Why are they so happy that writers will have to find new work? What about all of this makes them think that it’s a good thing that human programmers will be replaced?
“digital artist” is a term people use for someone that makes digital art as their primary form of art (using programs like Photoshop, krita, or Clip Studio Paint as an example).
Similarly, “digital art” is art made using those same tools as much as “traditional art” is art made without those tools. These are all just labels people give to be specific within a group.
Nobody is saying a digital artist isn’t an artist.