Gave up on Siri towards the end, I don't have a regional accent, or a speech impediment and it routinely got most of the things I said wrong. The "beta" excuse has long run dry, you don't release something and advertise the heck out of it as an amazing core feature, and then hide behind the Beta tag for nearly a year.
How, exactly, is Apple 'hiding' behind the 'beta tag'. I have not seen a single instance of Apple using 'beta' to explain or excuse any of Siri's perceived short comings.