Yes it seems this may be the case. I'm renting points from someone for 5 people, 1 of which is an infant. I was trying for a value studio, but when the person I'm renting from went to make the reservation they told him he had to book a standard in order for us to have 5, with the 1 being an infant.
Ahh well..now I have a better chance of getting a better view anyway!