a) I think we're realizing that the marketing operation was 70 years of "Russia is scary strong". Reality is Russia is really bad at fighting armies and great at brutalizing civilians.
b) The preponderance of evidence is that Russia has made a long string of really, really bad decisions at all levels. It is so bad that they should consider playing Yakety Sax when they pass in review.
c) The fact is Russia should have taken all of Ukraine by now given the asset and manpower advantage they have. The fact they haven't achieved air dominance, have lost major capital ships to a country that effectively has no navy and are being beat by forces largely using less of the same equipment plus is just mystifying. It wasn't that many years ago that the Russian and Ukrainian army were the same Soviet army.