Pretty sure conventionally-armed submarines launch ICBMS. Not nuclear tipped, but basically "big long range missiles". Regardless, I think my point stands: These subs are not for close water/shore patrol.
Sure, your point stands, you don't know much about Australian politics and these subs aren't especially suited for Australia.
They're a symptom of the former governments attraction to big (albeit stupid) grand actions and excessive sucking up to the US | UK at the expense of Australian taxpayers for no real specific local benefit.
The AUKUS submarines are conventionally-armed, nuclear-powered submarines.
ICBM's don't come into this.