It kinda depends. You will create a strong bond in a subgroup, but anyone who doesn't fit in for any reason will feel excluded. It would be very tricky to find

It kinda depends. You will create a strong bond in a subgroup, but anyone who doesn't fit in for any reason will feel excluded. It would be very tricky to find a hobby equally liked by all, but the in-group you create will not be overlooked by people only interested in political advancement. As an example: At the previous company I worked, the CTO and another engineer really liked bouldering. They'd often go out after work to the local climbing gym. Eventually, two other engineers joined that group and went climbing too. Mysteriously, all three climbing engineers got promoted and none of the non-climbing engineers did. Eventually the CTO left for greener pastures and the "new" two engineers (by now team lead and VP) stopped climbing the week after.