yes, but it might give those who own at very popular resorts just a bit more breathing room when trying to secure 'their home' at the 11 month window. It is not uncommon at all to be shut out especially for the less expensive rooms.
situation is not quite as bad compared to increasing reports of ticket brokers sucking up tickets to popular events, but in the same ballpark imo.
then, there's the issue of revenue paid to the broker for their services, which seems contradictory to the no profit thing as to selling points expressed by DVC.

Not having a law degree, could be wrong on this count. Realize many love these services, both members and renters...me, no so much.
I've seen the argument expressed that a member is ultimately entitled to use their points as they see fit. True, but only if they adhere to whatever rules, enforced or otherwise stated. My thoughts are that a combo of two factors is in play: speculative bookings (that may be released relatively last minute) or a member booking directly (upon direction of a broker's client) . Regardless, both effectively decrease the pool of rooms/chance a member has to be enjoying their home resort.
Note that the above is JMHO but coming from a BWV member who is unable to walk her early October reservation she needs due to use year restrictions.
I didn't run into issue booking that same week every year at the 11 month window until the professional brokers started to become more common and SSR was built. Other than people becoming more savvy as to booking, I can think of no other factors in play but it's frustrating, no matter the cause.