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
capitalism is a fuck but impostor syndrome is very real and trying to convince people its not is extremely unhelpful
Yeah I don't want to be that guy but not everything has to be framed exactly in terms of marxist principles.
Though, if you really want to, frame it as imposter syndrome arising out of a desperate fear of not succeeding because then you will go hungry and be a worthless husk in a sink or swim society. That vulnerability is different from alienation.