In their patreon they're seeling one tall mountain of promises. Considering their actions to this point, Steam policies and similar cases, it's fairly difficult to trust them at all.
I genuinely want these devs to succeed, not only because of the main focus of the product, the obvious attention to detail put into the characters and animations, but also to break through Valve's opposition and bullshit. This is likely the most high-budget product catering to the monster crowd, and it would be a shame to see it go down in flames.
Sadly, they've really shown very little of what the end product is going to play like, and the fact they keep changing their tune about some very fundamental aspects of the game is worrying. I'm especially annoyed that they've yet to show how the porn content is going to interact with the gameplay in general.
Compare it to a "similar" project - Subverse - (in the sense of "monster x women" content), and how it frames and integrates the adult content into the core gameplay. The female characters breed with monsters, in turn giving birth to hybrids that you can then use as troops during the land battles (or at least that's how I remember the devs describing that gameplay loop - someone correct me if I'm wrong).
Meanwhile, these devs at one point wanted to completely separate the "game" part of the project from the "porn" part and sell them as two separate products, only to have to backpedal due to outcry from their costumers. I genuinely worry that the end product will end up being some half-baked XCOM-clone, with randomized maps, while the porn portion of the game is a completely separate thing that interacts with the game properly in a minimal capacity.
And that's even if they bother with the game at all, and don't just focus completely on the "Harem" mode.
I think their obsession with getting the game on Steam, come hell or high water, despite very obvious indications that Steam really, really doesn't want the game on their storefront, is just hurting the overall product and causing massive disruptions to their development pipeline, and the more they compromise and cut in order to appease Valve, the more upset their fanbase gets.
Sooner or later they'll have to cut their loses and figure out some better way to reach a wider costumer base, because the mainstream market sure as hell isn't ready for a product like Operation Lovecraft.