Any set of rules create unintended consequences. That’s the definition of a loophole.
While I agree that booking rooms with no intention of using them is marginally uncool, sombody is going to use those rooms, probably very near the 11 month window, so I find it hard to get too worked up about it.
Until very recently, Wyndham, for example, allowed cancel/rebook strategies for VIP customers to book all the prime rooms and then cancel and immediately rebook them within 60 days to drop the point cost to 25% of value (a VIP perk for rooms rented within 60 days). The megarenters had a field day with that loophole for years, using it to exploit millions of points annually. Enough so that it eventually broke their points system, and now there are very restrictive banking/borrowing rules as a result; it killed the credit pool.
Loopholes are natural byproducts of a rules based system. You tolerate them until they’re over onerous and then you make rule changes ... that create different loopholes. (Walking itself was created by a rule change designed to eliminate what was widely considered to be an over onerous method of 11 month window booking.)