I don't do much in the way of tracking my total out-of-pocket costs for vacations. I do however, monitor our utilization of timeshares and the costs associated with them.
I've been fortunate to be able to travel frugally and not really worry much about affordability. We are far from rich, but have been savers and planners, which makes it easier to afford to vacation comfortably. (As an aside, my hubby hasn't worked a "paying job" since we got married . . . mainly by choice/design, so we have been truly dependent on my job and income.)
With my impending retirement (less than a week from now), I had someone see it necessary to "lecture me" on my "lavish" travels and being able to afford such on social security. I simply laughed at them, and shared with them all of the great travel (including some pretty nice international destinations) I/we have been able to afford when I've been between employment gigs. In fact, over the past 30 years, I've been "between gigs" (aka "unemployed") roughly 40 months (the shortest was 3 months, longest 16 months) . . . and yet, I was still able to take 15 awesome vacations (all at least 1 week, and 1 was 2 months) without going into debt or withdrawing from our retirement savings.
It's unfortunate that people read articles such as that one in Travel & Leisure and then feel they can't afford to travel. That said, I also know that many people want to be pampered and do travel extravagantly . . . and $2,000/week may fall short as a fair estimate.