"What's that Auntie, you think we should give more money to the weapons contractors? "

"Funding the Military Industrial Complex" seems to be the only "rational" baseline explanation for lots of Western craziness. Take the newly formed AUKUS:

https://www.dw.com/en/uk-46-billion-aukus-nuclear-sub-contract-to-counter-china/a-66976761

All those billions...and what for? to "preserve security and stability in the Indo-Pacific..." " "...to reduce the likelihood of
conflict"

Well of course the Australians have to protect the trade routes with their biggest trading partner...which is China. And who are they protecting this against? "...US, UK and Australia are paying to the Indo-Pacific and their commitment to constraining China’s exercise of power in the region."

So...lets get this right: they are spending billions on Nuclear submarines to protect Australian trade routes with China against...ummm...China? - Yup.

Meanwhile the Chinese are developing a new way of tracking Submarines:

https://interestingengineering.com/innovation/china-novel-method-track-us-submarines

So...long before these things are even operational, China will very probably be able to track them all and clearly will have countermeasures at the ready.

So...aside from being pointless for the stated purpose (which is oxymoronic), these submarines are technologically White Elephants before even being built.
That of course has never stopped the West before: a West still keenly building Aircraft carriers that can be dropped to the bottom of the ocean in minutes by Chinese hypersonic missiles.

No: there seems little rationale behind any of this other than Western racism and belligerence fed by lobby pressure to extract an ever increasing tithe from the population to feed the Military Industrial complex (where the elite hold a lot of investments)...to extract huge amounts of money for worthless unworkable rubbish.