Lol, don't know where you got that so called evidence. The reality is that Stalin decimated the Red Army, purging its generals in the 30's, cooperated with Hitler over the invasion of Poland and appeased Hitler up to point in time when the Wermacht invaded Russia.
Stalin’s plan was to have the War in the West, which was his intent when he signed the non-aggression pact....that would buy him time to build up the Red Army, and be ready to attack in 1943, in the hope that by that time the British, French and German armies would be depleted....only one thing, the French surrendered in 6 weeks, which as it turned out, may have been a blessing in disguise.
The reality is also that Hitler and Stalin both were double dealing tyrants. They each played events for a moment of their own choosing.
It is ‘controversial’ I’ll see if I can find it for you... Stand by...
Stalin was certainly unrealistic about the capabilities of the Soviet Army of 1941, but then is that so hard to believe from a dictator who didn't welcome a contrarian point-of-view?