As the dev said earlier, I don't think Niichan had received any special treatment here. If you do some research you'll find that for MBML the leak usually happens at $1 or $5 tier. I still remember that one time the game got leaked and Niichan just straight up published the download links here. Maybe people just got spoiled by those more popular games which would get leaked within just one day, or even several hours. For most games on this site, leaking at low tiers or no leak at all is the norm. And of course, I do hope devs who have free release could earn as much as possible before leaking happens.