Yes! From the corporate point of view there is no such thing as a poorly designed promotion. There are only demon customers who ruthlessly exploit the promotion and inflict massive losses on the faultless company. See how that works?
CP'a points+cash wasn't a designed promotion. And points+cash stays don't count toward Choice Privileges promotions.
Massive losses for Choice from points+cash stays? That would surprise me. Losses for and complaints from Points.com over "the loophole"-come-"designed promotion"? That would be less surprising.