2049 is a long time from now, unfortunately. These transits are symbolic soft power but detection and tracking data feeds directly into training kill webs, which is hard power. If the west wants to contribute to Chinese military development, I say let them.
I'm just waiting for the PLAN to sail through the Bass Strait and then start doing some live-fire drills just outside of Australian waters.
If the RAN and the RCN really want to start doing some shit, I'd recommend those two navies to do some live-fire drills during their transit of the Taiwan Straits. Let's see if their legal fiction of the Taiwan Strait being international waters would hold any water.