yeah, I got that.
This is actually a bigger problem then people realize.
Now, you can do "after XX" pieces but this tends to be like... "I am doing a painting in the exact same way with the exact same tools as Bob Ross and calling this piece the same *Pretty mountains, pretty cottage after Bob Ross" what i can't do is claim that the original concept was mine.
That's where the disconnect is for some people, I think. Now, in fairness, the Japanese art side WILL promote copying but only for the sake of learning the process. Mangaka for years still acknowledge it's bad practice to copy word for word/picture for picture/ pose for pose that someone else did.
I don't know if you all remember this but:
https://knowyourmeme.com/memes/events/incarnate-the-nick-simmons-plagiarism-scandal
There was this whole debacle that happened a long time ago. And yeah, it's really bad practice.