True enough. All I'm saying is that it definitely isn't going to stay Communist-Stalinist for long. Too much pulling against that outcome.
An American Communist revolution would not want Stalinism and might not need Stalinism. The point would be to accelerate progress, not retard it.
I do think they could at least match the overall progress of standard of living of the USA OTL, at least for ordinary people, if not the total GDP. And I think they could well overtake even that.
They could of course also fail. But it's not like American revolutionaries are going to think slavish imitation of a regime desperate to catch up to a standard Americans had long surpassed is the goal.
To be sure, such a revolution is unlikely here unless things have recently got very bad compared to recent memory. But such reversals can and do happen.