keep in mind that Lenin was in his late teens when Tucker wrote this, so Leninism couldn't have existed as a commonly accepted political philosophy. For convenience, I've only taken the end of the Tuckerian analysis, so there are a few steps from Marxism to get to this point. This was a direct extrapolation and direct criticism of Marxism, and unless Tucker was a time traveller, it could not have been anything else (much less Stalinism).

It would be valid to invoke some sort of mechanism that prevents Marxism from getting to the point of state socialism where this quote takes off; but of course, empirically, Tucker's model seems to have been shown true in a few cases, so I would suggest there would need to be a heavier burden on describing exactly what needs to be different, and why.