I don't think Russia can wait a year - Ukraine has long-range missiles coming online (homegrown no less) not to mention potentially acquiring more from Germany, France, etc. I think Russia will have to move its remaining bombers out to more isolated bases, farther away from Ukraine.
Ukraine was willing to release video/expose the methods they used, partly because Russia already knew by the time the last drone hit its target, but also because they've got other things in store.
While there is a lot of symbolism in hitting those bombers, a lot given how many missiles they launched at Ukrainian civilians, I think they did it for strategic reasons. This was too big of an operation - if they wanted symbolism, they could have gotten a few of those trucks near Moscow and hit the Kremlin. I think they are trying to shape the airspace to keep the bombers far enough away that either it gives them a lot more time to prepare when they launch, or to just reduce the amount of missiles that can be launched on any one raid and/or take a lot of Russian missiles completely out of the equation.
I'm surprised by Russian state TV as well, I expected a lot more "we will melt the Western capitols down in a sea of nuclear fire".