It also isn't new at all - the puritans had similar ideas that took them from ruling England after ousting the king to what may be snarkily summarized "We prefer nobility over these self-rightious fundamentalists wankers."
It is a toxic "your misery is good for you because it flatters my ego" attitude mixed in with nostalgia for a past that never was.
Being able to deal with boredom productively is useful but that doesn't make boredom a virtue or a good way to promote it any more than being able to stay sane in maximum security with only a library makes isolation a virtue and solitary confinement a good way to promote sanity and literacy.
It is a toxic "your misery is good for you because it flatters my ego" attitude mixed in with nostalgia for a past that never was.
Being able to deal with boredom productively is useful but that doesn't make boredom a virtue or a good way to promote it any more than being able to stay sane in maximum security with only a library makes isolation a virtue and solitary confinement a good way to promote sanity and literacy.