The First Marxist Workweek was in 1922. Moreover, I hear that the Soviets implemented similar social-justice policies at first, but later dialed it back in favour of closer adherence to traditional Russian culture (and russification). The Chinese are doing the same thing now, only I don't think they ever really went in for what we would now called SJW stuff.

Whether Leninists consider other flavours of leftist to be "real Marxists" is of no concern. They can have their little sectarian debates about who's a heretic or "revisionist" and it changes nothing who some guy on the internet claims the apostates are.

I wish I could agree with you about the spirit of Marxism being dead.