Any company culture that expects you to be friends with your coworkers is a dumpster fire.

Any company culture that demands friendship, certainly. But there are more than a few firms that do a good job of cultivating it naturally. When work requires collaboration and people spend lots of time together, they often form bonds of friendship of their own accord.

I find that companies which cubicle off their staff, silo the work so its never more than one or two people working on a given project, deliberately run short-staffed (particularly when business is slow and there’s ample time for socializing), have managers that give you heat for any kind of non-work activity, and visibly stack-rank staff so that everyone is on edge about layoffs can create an environment where people are poorly socialized.

But so much of this is about squeezing “efficiency” out of workers. If you’re not friendly with the people you spend a solid third of your day with, you’re not doing anyone any favors except the bosses. Alienating you from your co-workers is the end result of the long tail of union busting and precarious employment.