The USSR and China each brought hundreds of millions from barely subsisting to lifestyles comparable to the west within a single lifetime and made great progress on LGBT+ rights. Cuba has a higher life expectancy than the US despite the blockade and constant attempts at destabilization.
You shouldn't compare the USSR to a fantasy utopia, you should compare it to the actual alternatives we've seen in reality, Tsarist and modern Russia.
Anarchist projects have yet to manage step 0: Resist capitalist encirclement for more than like 5 minutes so we don't have any actually existing examples to study.