The author was talking about "extended" family and not the core family of blood relatives. It's understandable that nieces & nephews don't necessarily look forward to spending A WHOLE WEEK with Uncle Bob's annoying 3rd wife. A lot of extended family members can only tolerate each other in small doses and forcing themselves into a week-long retreat in a confined space would be torture.

Every family is different and unless there's some external circumstance (e.g. military deployment), the relatives settle into their own rhythm in the quantity of contact. For example, some adult daughters talk to their mothers every single day, multiple times per day. This would drive some husbands crazy and they're happier with a wife that chats with her mom once a week along with the annual Thanksgiving dinner at the mother-in-law's house. At that frequency, there is genuine peace and harmony. Any more than that and people start plotting murder.

It's either fights about who's going to inherit what (and we're not talking about the Taj Mahal, but about a stupid piece of agricultural land in the middle of nowhere), or some grand-mother accusing her only daughter who went to college of "you could have done much better! and why did you have to marry X?" (with X, the son-in-law, being present, together with said couple's kids) followed by the grand-father from the other side of the "family tree" accusing X of marrying "bellow their family status", and so on and so forth.

You should be spending a lot more time with your family IMO.

Not everyone feels the same way you do about their family, their loved ones, or their social bonds. Your comment makes it seem like your way of doing things it the correct or normal way, and only crazy people or weirdos would even think about doing it any other way. Which has the potential to be very alienating for a good deal of people in a community that encompasses many diverse people all over the world.