I read this article about double spending attacks. The article has a sentence that goes like this:
"Finney attacks can only be executed by miners, and are therefore fairly technical and obscure."
Before this sentence it explains that a double spend attack happens when someone creates two transactions with two different fee rates so one goes through faster, but if someone accepts the transaction with the lower fee rate, the double spent had happened. So, my question is, why does it claim that only miners can do this? Anyone can create two transactions with two different fee rates!