What’s up with medical schools keeping WL procedures a secret from applicants???

The title pretty much says it all. I’m on a WL for a MD program that allegedly has a lot of WL movement, but ofc there are always people who never make it off. It does seem like at least a few people get outright rejected post-II at this school, but the school pretty much withholds any info pertaining to their WL procedure. They don’t say anything about the size of the WL, or how many people get accepted from the WL (on average) per year. More importantly, they don’t tell applicants anything about our ranking/position on the WL, and my question is why? What’s the motive behind the secrecy? I’m someone who likes to plan, and it’s unsettling being in limbo possibly until the week classes start. Can anyone with adcom experience chime in on this? Is it a yield thing? I just can’t see the logic behind hiding WL info, but I assume there’s got to be some rationale that I’m not privy to as a mere applicant