Big, heavily armed, ships aren't particularly capable of defending themselves from small drones, designed for the task. That's why Russia's fleet got their butts kicked in the Black Sea by a country without a navy.
I would not call it butt kicking. But yeah, Black Sea Fleet is liability in this war. Russia spends resources on protecting it and NATO spends resources on attacking it. In the end, it has no effect on the outcome of the war, whatsoever.
From a military point of view Russia can "resolve" the problem by kicking out NATO planes out of the black Sea by extending security zone. But NATO will do the same in Baltic Sea. So Russian military decided to let it happen.
These 40 year old ships are junk anyway.
For the record. 90% of NATO successful attacks come from attacks on ships in port with no active defence or even crew on it.
When it's in the open sea ukro-nazis usually fail, but it does not get reported by Nazi News sources.
So yeah, Nazi regime spends significant nazi resources on nazi PR victories.