I was just a crew member on the sub, hardly knew where we were much less what was going on.
But in later years I was involved with SOSUS, the tracking of their subs and surface ships using hydrophones. That system is mostly retired by now, we have more modern means of tracking their ships.
This is about a good a read on the subject as any....
Blind man's bluff: the untold story of American submarine espionage...
But IMO the current reason is probably as sabr said, they just want to feel like they are participants in a game they can never win. They might score a few points but there is no winning unless they get their Navy back up to speed.
India just launched thier own home built sub. They might be done with buying Naval hardware from others.
Oracle of Utah
Truth rings hollow in empty heads.