Here's something to think about: when you're complaining about why no one is sharing his work, have you considered that maybe it's because hardly anyone watches it in the first place? And please, don't bring up the "back in the day" argument. Back then, works were made with real effort and heart, which is why people recommended them and supported the creators—hoping they'd create even better content in the future.
But the creator you're talking about? He's just using Koikatsu to drop scenes into HMV videos—it's not even fair to call that creating. There are a lot of people using Koikatsu, but less than 1% are actually creating with it. The rest are just copy-pasting—users, not creators.
So you've got two choices: either wait and hope someone shares it, or figure out a way to pay and become a supporter.