Eh, that's also what I found out about the english speaking community. We're our worst ennemy. We talk about helping the industry, having bigger hentai anime and games, but when the time comes to even put 10 bucks people can't help but keep pirating. Then we hang our heads complaining "But whyyyy does the japanese not catter to us ?", mmmmh I wonder. Maybe it's because we're irresponsible and can't even support super niche cheap games ?
Im ok with pirating non translated games since you don't get the full value of the game to begin with and the game is most likely not intended to be played by you, but surely you can encourage translations effort by paying for the product. Especially since H-game translation is still in it's infancy stages.
Now it wouldn't have been the same if the game was on steam, simply due to the sheer level of exposure, so putting everything on piratry isn't good either (especially since we all pirate). But like Clymenia said, he can't put it on Steam right now.
But come on, 10$ ? Really ? Is that too expensive ? You know that there is a demo to try to game right ? You don't need to pirate it at any point.
We never advertise DLsite English and push people to buy shit over there, thus it remains a niche platform even though it's a treasure trove of H anime and porn games. Sure DLsite eng could do more to advertise themselves, but we also need to take responsibility for it, because right now if Steam really strenghten it's rules on lewd games we'll suddenly be back to the time before ONEONE1 games and Meltys Quest, with no professional translation effort and no way for devs to expand out of Japan.
More japanese games can only get translated if people can get money from it, if they can't what's the point ?
Speak with your wallet.