I really do feel like a lot of people could stop mid contest. And don't misunderstand what I'm saying here, I'm not speaking for all people, I'm not even speaking for myself. I'm simply expressing what I think is highly likely to happen among a variety of creators. Yeah publishing the first ep is the hardest, but it's no walk in the park to continue producing the comic. If you already feel like you lost then many will ask "why should bother investing more hours into making another ~200panels when this contest feels so rigged?".
Like I said not everyone will think this way. And to my other points in my other comment, hopefully not everything thinks that way either. But are there handfuls of people thinking this way? Probably. And that's the problem. It doesn't take a lot of people to have those negative thoughts for problems to arise. It doesn't take many people to question the validity of something before it can attract more like-minded people. And angry people usually speak the loudest. So webtoon would be smart to consider how to fairly promote contest entries, or not promote them at all...
Or who knows, maybe they don't care because they'll do what they want. To each their own I guess XD