But, have had heard the same thing that was said in the page you linked, that one of the reasons Brahms took so long in his life before he wrote a symphony is that he had to compete with Beethoven, and didn't feel it was ready until much older. Yeah, what an immense weight he must have felt to have to follow up what Beethoven had done!
And moreover he wasn't at all afraid to say so; he clearly considered it normal and commonplace.
So I want to be less afraid to do that. Because at the end of the day, if I decide it's too stolen, I can always just not release it.
Some also argue it's what makes AI "not stealing" although many artists disagree with it.