No.Can’t you just dial up a P8, or a loyal wingman or 2, with a few Mk46 ?
And , in the future, won’t we have UAV‘s on most, if not all ships, including Arafura OPV, which could drop a few sonobuoys
So, network effects, loss of one asset doesn’t denigrate the network
Fixed wing aircraft such as the P8 conduct their searches well away from a task group either ahead along the line of advance or in focal choke points.
Sonar buoys need to be dropped in patterns and then monitored, in the case of a P3B (I’m not current with a P8) the search area can cover 30000 square miles, the MHR-60s considerably less (again I’m unaware of their search patterns)
UAV’s won’t have the payload or monitoring sensors and OPVs will not be equipped for ASW and even if they were they are I’ll suited to TF operations. Being a truck for a few sonar buoys is useless.