Your understanding is somewhat incomplete. There is a strong top-down push to celebrate output maximization without inquiring too closely about if this output is meaningful, valuable, repeatable, or even happened at all.

It’s about making the productivity metrics go up, even if at the expense of real productivity or common sense. The man who it was named after ironically (unironically?) faked his own metrics

> Stakhanovism is kind of the opposite of US work culture in that it lionizes the worker and social contributions

Lionizes the worker for their output. Just the same as quota or target driven systems. It's the same kind of lionization as "employee of the month" schemes, i.e. a sham to encourage people to work harder.