Didn't warfare changed big enough that big navy might be more obsolete? Ukraine-Russia conflict showed that you can make hordes of cheap naval drones that can easily harass your very expensive ships or put them out of combat. By now probably you can still make more advanced but cheaper underwater drones, smart torpedos etc.
Hordes of cheap naval drones is what Ukraine had the ability to produce. And long before the current conflict started, Russia's navy was well-known for having very serious maintenance, performance, and survivability issues. They would have proven similarly vulnerable to a very wide variety of weapons.