As a young 30 something I cannot disagree more. I'm flabbergasted at have met my bff's ex and found out he was an old school company man. I've never seen a person so used and so unaware of it in my life and of course he finally left with nothing to show for years of being a victim of labor laws violations. His dad was like a life long Walmart mid-upper-level person.
No one I know, besides him, has job loyalty. Not the senior dev in Seattle making 400k, not the dog trainer, not the chef, not even my parents. And younger generations are just more and more cynical about it.
As they should be.