>I don't know what nazi propaganda was.
without knowing of a minimum of related history, you're still feeling like you cam meaningfully comment.
>The narrative of the russian officials is like the ukranian army places its heavy units in residential areas which makes them difficult to attack without causing collateral damage.
You feel necessary to repeat Russian propaganda again. According to that Russia propaganda the Soviet defenders of Stalingrad are guilty of Stalingrad destruction not German Nazi.
Anyway, if Ukrainians are hiding heavy units in residential areas when why all this tremendous amount of videos of the widespread residential destruction by Russian bombings contain no Ukrainian weaponry? Showing destroyed Ukrainian tank which was hidden in the children sandbox would be a great propaganda scoop for Russians, yet somehow they still haven't managed to show anything like this.
On the other side there is huge number of Russian tanks, armor carriers burnt on the city streets. Why those Russians were in the city? It is very reasonable to suspect that in those cases the Russians have been using the cities as human shield. Tons of videos like this https://www.youtube.com/watch?v=k-pBMdUWhws , https://www.youtube.com/watch?v=ge07_whd1v0 and https://www.youtube.com/watch?v=khPbavvcP38
>Cluster likely, vacuum unlikely.
again, you either repeat propaganda or more likely talking what you don't know about.
Cluster - the "spines" of the Uragan and "Smerch" cluster missile in the attacked areas is a clear evidence, like here for example https://twitter.com/bellingcat/status/1497205591814684678?s=...
Vacuum - in the linked video the explosion is pretty characteristic of vacuum munition https://www.youtube.com/shorts/H6Hj5VoZN_k . And there is a number or reports of Russian TOS-1 "Buratino" - vacuum munition missile launcher, and that weapon "shines", ie. extremely damaging in cities, not open field.