This is repeated often on HN, but I feel like it generalizes too much and is not always accurate. My last company specifically had "We're a team, not a family" as a core value. The company and team always had an air of arrogance around everyone and while nothing stood out as a giant red flag, it was never really that comfortable of a place to be in. My current company regularly uses the term family to describe themselves, but the overall vibe feels a lot nicer than my last place and it does not have an overwork culture; it actually has great work life balance.

[Edit] It's not a time thing. I was at my last place for 1.5 years. I've been at my current place for 1.5 years now and am happy to stay for long term.