impostor syndrome is a psychological pattern in which an individual doubts their skills, talents or accomplishments and has a persistent internalized fear of being exposed as a "fraud".
of course it's about alienation, not that they're lazy or inherently bad in some way:
"If you don't like your job, you don't strike. Just go in every day and do it really half assed. That's the American way!" - comrade Homer Simpson
Lol I wish it was fake, but it's very real. But it's not a very widespread thing I'd argue, and it's also used outside of the context of jobs a lot and I think it really holds up in non-work contexts
I think what OP means is that the perceived causes of imposter syndrome are wrong, rather than imposter syndrome itself. We've been alienated from our jobs because of capitalism, and all our frustration with work essentially stems from that. However, imposter syndrome is just another trick to explain away the real cause and re-direct our frustrations on some intangible concept.