The article is correct that you still need oracles (of course you do), but wrong in saying that blockchains are therefore useless.
A better article would be more intellectually curious! For example, it might talk about the sorts of oracles blockchains could enable and how much of a burden they need to bear with and without blockchains.
Shouldn’t blockchain proponents be the ones to come up with such an article?
The article specifically calls out all the use cases for which blockchains have been proposed as a solution. And none of those solutions discussed the need for oracles or discussed “what sorts of oracles they would enable”.
A better article would be more intellectually curious! For example, it might talk about the sorts of oracles blockchains could enable and how much of a burden they need to bear with and without blockchains.