I'm going to throw out a different theory that I am not fully invested in. Call it a thought experiment. Feel free to tear it to shreds.
There may be a narrow window in which modest escalation against Russia can occur between now (well really, the POTUS election) and 20 January 2025. If Russia honestly believes President Trump will be more open to a negotiated settlement favorable to Russia, there is a chance that Russia will wait out this escalation, assuming the escalation does not kill large numbers of Russians or does not destroy Russian military facilities deemed necessary to Russian defense/existence. Maybe the Biden administration is taking advantage of this window....
If this is true, and that is a big if with tons or risk, it is certainly possible that these attacks weaken Russia to some degree perhaps reducing or undermining any Russian position of strength, which could then provide beneficial to Ukraine during future negotiations.