What I'm saying is that the ships themselves won't be missed. And at the rate they are building 056s, 054As, 052Ds, and 055s, I have absolutely no doubt the personnel will be reassigned with no problem at all.
I fully expect that with the rate at which these new ships are being produced and commissioned, we will see the last few pre 1990 commissioned surface combatants get retired and replaced.
But these old ships will be kept for a few more months or years longer until their replacements arrive.
Since the mid 2000s, the Navy has been doing a delicate balance of commissioning new ships, retiring the oldest ships, and retaining old ships in a way that allows them to modernize their fleet for more immediate purposes, while also allowing the fleet to expand in total number which will allow the order of battle to more easily become not only larger but also more fully modernized in the more distant future.