I don't believe it's fair to judge the game future right now.
It's a new developer, with no known lewd game previously made, but credits show that the team is made of professionals artists with experience in actual AAA games and 3D games. Which is very valuable and very rare, since most lewd games developers have no prior experience in video games in general and are self-taught.
Also, it's still too early to know how reliable and how well their structures and plans work out. They currently only released a tech demo, which give a small sneak peek at what the game will look like. And it's quite fantastic.
As for the lack of funding, it's mostly because it's a new dev, that just released a tech demo with very little content. Since most of the marketing for lewds games is based from youtubers and streamers (Just like how Summertime Saga got popularized), no content mean youtubers won't be interested in making videos about it. When the first few sotry updates and such come along, things will start to accelerate quite more. The game didn't showed off yet.
With the stuff the trailer showed and by the quality of the assets and gameplay, it's fair to say that the game look VERY promising. It's a wait and see.