alt Hacker NewsOP might be referring to Jose Valim's 2023 ElixirConf talk where he's explaining why Elixir should go down the path of types.
He gives a lot more nuanced take than 'types are useless', which is more like 'types are less useful than people think in the context of Elixir development'. (Which makes sense because he's in the middle of implementing a type system for Elixir.)
Yes, that is a great talk. He really does an admirable job of exploring all of the reasons why people think that they want a typed language and concludes many (but not all) are not that helpful.