It feels a bit silly to let Russia know how they carried out a successful attack. I'm sure they'd have worked it out but why not at least make them wonder for a while?
This is rubbing salt in the wounds, and pre-empitively declining's Russia's change to spread lies, like for example by the part if Zelensky's statement that said all their agents where saferly back in Ukraine.(as often often Arrests random people and claim them as perpetrators behind X or Y)
And if we look at the past years in particular Ukraine has grown increasingly balsyer implying that they either known how to cross the border safely or they have a collection of border points they can safely pass for the right bribe.
But from their point of view, they now showed Russia that even on the outcorners of Russia their planes or whatever hardware for that matter isn't safe. And those planes their damaged or destroyed can't be brought back into service. And Russia is quite powerless to do something about this as they simply don't have the manpower