I dunno, I've worked at businesses that didn't care about culture and the working conditions were pretty mediocre. I've worked at businesses that intentionally tried to make the business a "good place to work" and people were happier. Sure people are less likely to quit, but isn't necessarily a bad thing.

People like to think of our work selves as these alter egos we take off when we go home from work. Life is more nuanced than that. If you've got a stressful job that stress is going to bleed into your personal life.