That's what I said. It was hindsight bias turning things into prophecy and not "it's all happening like the prophecies foretold.". They were so desperate for prophecies they even made up ones that never existed, I'm looking at you Matthew 2:23.

But the commenter said that they had no value other than poetry. They are just the prayers of men. And in doing so they ignore the completely made up but very real world necessity of the Psalms to justify people's belief. For without the believers' ability to use them as prophecies, even if they weren't intended as that, the majority of the case for JC as the Messiah vanishes.