milesrus,
I'm tending to agree with you that there is some underlying lack of effort on Latinpass' part to book KLM tickets, for whatever reason. There has been some anecdotal evidence here of people obtaining KLM award tickets, so we know it does happen.
I don't know what amount of effort and follow-up is required to get a ticket. Whether it means calling every single day, over and over and over, without losing patience. Being available to take any seat on any day. I really don't know as I haven't been down that road.
I did try to book some KLM award tickets once a year or two ago, but I wasn't successful, so I gave up.