Every artist has to practice (this is why AI bros gave up on actual creation and got jealous and larcenous, they are definitionally lazy). By flooding the market with stolen low-quality art, you choke out a necessary market for inexpensive amateur art.
1) There is no theft, analyzing copyrighted data and using the results of this analysis is just not theft.
2) It is of varying quality. Yes, easy-to-use tools tend to let people flood the internet with low-effort shit but there are many wonderful things made with the use of generative AI
3) As I said, the impact of images of those 'artists' in models is insignificant and, most likely, net negative. Most of the training data is either public domain or copyrighted by huge corporations - Dysney, Warner Media, etc. For some reason, they don't sue anyone...
Note that, let's say, a Twi'lek girl on someone's art also belongs to Disney because it is a copyrighted race.
4) Customers do win from an alternative source of being able to do the most simple stuff themselves. They also win from the fact that good rational artists can do more using those great new AI tools. Also, it is amazing when you don't have to buy stuff from people who consider you "jealous and larcenous". Despising people for merely not possessing your skills (especially when your own skills in the field are modest) is an appalling behavior.
5) "Fan fiction masters"* with no creativity will never become truly professional artists no matter how much experience they amass. AI is just a great new excuse for why they will fail.
* I have nothing against fan fiction or other derivative works... When they actually add something. Fan fiction sequel to a book - cool. Image of a character in an unusual style or with a strong message - cool. But most visual fan fiction doesn't go beyond simple copying. It is literally "Look! I made another porn version of *inserted copyrighted character*! I am so better than those plebs who have no time or motivation to learn the basics of drawing"
and then the larceny algorithm runs out of material, but tech bros (and... "people who consider art and artists decadent") ironically don't consider future consequences if they can fuck over people they don't like.
1) It is not how AI training works...
2) Existing models aren't going anywhere. Neither will they change. Stable Diffusion on my PC will stay the same if the internet disappears tomorrow
3) Synthetic data is not inherently bad. Proper tags matter. Note that it isn't even raw output. It is a filtered output.
4) Randomly scrapping data from the internet is the easiest and the cheapest way to get training data. It is also the worst one.