In all your examples -
1) Yes. It was a good thing
2) Yes. It is now a thing done to learn how to draw, and a niche skill
3) Yes, yes, yes.
IF people are bemoaning the devaluing of certain activity, yup it’s true. It happens. There are fewer horses than there were yesterday.
Certain forms of activity get devalued. They are replaced by an alternative that creates surplus. But life goes on to bigger things.
The same with GenAI. Content is increasingly easy to create at scale. This reduced cost of production applies for both useful content and pollution.
Except if finding valid information is made harder, - then life becomes more complex and we don’t go on to bigger and better things.
The abundance of fabricated content which is indistinguishable from authentic content means that authentic content is devalued, and that any content consumed must now wait before it is verified.
It increases the cost of trusting information, which reduces the overall value of the network. It’s like the cost of lemons for used cars.
This is the looming problem. Hopefully something appears that mitigates the worst case scenarios, however the medium case and even bad case are well and truly alive.