Soviet Union never claimed to actually be communist - it was the Union of Soviet Socialist Republics, after all. Communism was supposed to be that thing that'll eventually happen after you had socialism for long enough for the "new type" of people to emerge. The Soviet joke about it went, "communism is like the horizon: an imaginary line that is always the same distance away as you walk towards it".

That’s why soviet union had communism written on the facade and caste system inside. Party members had every luxury westerners had. And stupid dissidents silently disappeared to some far far away places behind Arctic circle.

I wouldn't say they had everything, but they surely had more. It's basically like in 1984. If nobody has chocolate and you have a little, you already feel richer.

I am king if I have original Levi’s jeans :-)

Communism is a process leading to a utopic state. Even Marx makes this clear in his manifesto.