Regardless of who wrote it, the content is what is more important.
I agree the content is important, but it makes conservatives look careless when people make up things that can easily be fact checked by the lefties.
They can say, “See, these people just make things up and put them on the web. How can we trust anything they say?”
I think accuracy and proper attribution are very important. Especially if you are giving this to students. It’s embarrassing when a student says, “Mr. Cyclone59, I looked it up. That guy didn’t write it.” A teacher doesn’t want that.
Also, there are tons of sayings attributed to Lincoln that were written by various people who decide to make them have more impact by tacking Lincoln’s name on them.
“A good story in the defense of conservatism is a great story.” - Abraham Lincoln, 1867.