Only irrelevant in terms of using them as a staging post for a military confrontation with China, but a bit more relevant when you consider Chinese strategic ambitions in the South Pacific.
https://www.usip.org/publications/2020/07/rising-china-has-pacific-islands-its-sights
If AUKUS was about projecting western power in the region, this would be a consideration, and would lead to the AUKUS participants wanting French involvement. But it seems more to do with Australia wanting US tech and the US wanting the business.