Yes. They have shown they are not well organized, have poor leadership, have defective planning, are terrible at logistics, have poor discipline in the ranks.
Eh. I don't understand others military analysis. Russia is doing the right thing to just sit a convoy north of Kyiv. Ukraine doesn't have air power anyway. If they rolled into Kyiv it would be a urban combat meat grinder. They are better off waiting until the forces from the south and east meet south of Kyiv. Then they can surround Kyiv and shell it to rubble [what they learned in berlin]. Wait for white flags, then roll it. Ukraine needs to wipe out that northern convoy NOW.
https://en.wikipedia.org/wiki/TOS-1
Vacuum explosives aren't nuclear, but god damnit: https://pomf2.lain.la/f/7vj9hxrh.mp4
[1] https://pbs.twimg.com/media/FNMiInhXIAQHEdl?format=jpg&name=...