The French already were on course to have 60% of the jobs in Australia (they wanted 90% originally). The US won't transfer nuclear knowledge to Australia so the number of jobs will be drastically less.
This deal won't go anywhere, Australians don't want nuclear energy or submarines. New Zealand won't allow them in their territorial waters preventing Australia to go East. Nuclear submarines are 50 to 100% more expensive, if they complained about the price of the French submarines, they'll have a harder time with the nuclear versions. The first US submarine would be available in 2040 so much later.
At the end, this is their choice. France is losing about 8 billions as most of the money would have been spent in Australia. With a US/UK deal, most of the money will get out of Australia.