Kraznaya
Princeps
NK, I'm glad you at least had to stretch my argument to illogical extremes to prove your point. 
There's a huge difference between literary allusion and the fanfiction I'm criticizing. The examples you brought up are not regarded as fanfiction, because they do not fall under the category of what characterizes modern fanfiction, which is characterized by the flaws I described.
Now, are there relative levels of how good or bad fanfiction is? Of course. The worst offenders are the ones which blatantly use the shell of the original authors' character ideas and take them in completely unbelievable directions. There's better, on the relative scale, fanfiction which simply borrows the author's universe because they appreciate the work expounded on the setting. But modern fanfiction, by definition, steps on the original author's work to an extent not found in classical literary allusion, and mutates the original intent present in the work of authors who are very much alive. That some authors might be angry at this perversion shouldn't come at a surprise.

There's a huge difference between literary allusion and the fanfiction I'm criticizing. The examples you brought up are not regarded as fanfiction, because they do not fall under the category of what characterizes modern fanfiction, which is characterized by the flaws I described.
Now, are there relative levels of how good or bad fanfiction is? Of course. The worst offenders are the ones which blatantly use the shell of the original authors' character ideas and take them in completely unbelievable directions. There's better, on the relative scale, fanfiction which simply borrows the author's universe because they appreciate the work expounded on the setting. But modern fanfiction, by definition, steps on the original author's work to an extent not found in classical literary allusion, and mutates the original intent present in the work of authors who are very much alive. That some authors might be angry at this perversion shouldn't come at a surprise.