And the Ukrainians still don't have the ability (or are apprehensive) to launch a meaningful counter offensive, while the Russians keep advancing slowly.
As for the bombers being "irreplaceable" that's the western media fudging with the facts - yes, Russia is no longer manufacturing these particular old but operational strategic bombers any more and hence they cannot be replaced. But Russia has been able to revive production of the TU-160 (and its variants TU-160M, TU-160M2 - the largest operational bomber in the world) and has started manufacturing these new / revised supersonic strategic bombers since 2022 (Full production of Russia's Tu-160 bomber restarted after 30 years - https://newatlas.com/military/russias-tu-160-bomber-restarts... ). It has also developed prototypes of a new stealth bomber, the PAK-DA. So it is ignorant and incorrect to say that Russia doesn't have an industrial base any more to manufacture such kind of bombers. (I will however concede that sanctions are definitely interfering with Russians progress in this domain, and hindering fast production and research effort).