Hello Paul, actually different reasons...
1.) Curiosity, because the product page has this 200k+ advert for a long time. then i browsed the pages and noticed that every other item has a download counter... so, why is this info not updated or simply displayed? I am aware that the other infos might be wrong or estimates... or just downloas and not real usage statistics.
2.) Maybe business interest, because I still think about some add-ons, extensions or enhancements. Not sure if any efforts in this direction would make sense for me. so, a little statistic and numbers would be fine.
Again, i don't see any reasons or differences to your other products. why is it a "holy secret" for SPPB?