Do you also think that Da Vinci, Shakespeare and Bach have become "bad art" because others have copied them (often, as with Poe, never reaching the class of the original)?
Who has copied Da Vinci, Shakespeare, and Bach? See ... no one knows who they are. It's only when one transcends copying someone else and expresses themselves that their work becomes memorable.
Look, the OP was asking us what we LIKE OR DON'T LIKE about these people's work. I'm not impressed by Poe's work because time has drowned it in an ocean of mediocre similarity.That's not his fault, but it says something about his work, I think. And I wasn't particularly impressed by it otherwise, either. His drug-addled nightmares just don't inspire me. They're like pornography but about fear instead of sex. It's all just weird and uncomfortable, and most of all it's pointless. I'm not saying it shouldn't exist, or that it's not art. I'm saying I don't much care for it, and this is why.
On the other hand, at the time Poe was writing, I think it was somewhat important. Because until that time, people were too afraid to address that kind of content out loud (for fear of the church, as well as other things). So in his day, I think he was quite relevant. But I'm not living in his day. None of us are. And so in our time his content has mostly become just 'cheap thrills' for fun and profit, i.e., pop entertainment.