These aren't really comparable, OP's is something that records, captures and reproduces with steps.

playwright can do all of that too. I'm confused why this is necessary.

If coding agents are given the Playwright access they can do it better actually because using Chrome Developer Tools Protocol they can interact with the browser and experiment with things without having to wait for all of this to complete before making moves. For instance I've seen Claude Code captures console messages from a running Chrome instance and uses that to debug things...

That's exactly what Playwright does, but also something you don't really need in order to debug a problem.