I just think they're using CAs community to get ideas for their own uninspired game. I have no problem with other developers posting here before, and am on good terms with a few of them, but these guys are only trying to poll for opinions or ideas on what would make SDV better, or what we like most about it. When asked for details about their game, I saw nothing of substance in reply. Simply put, I don't trust them.
While I like and appreciate the sentiment, I need to draw from my extensive experience in not being good at things and go with:
Mostly Harmless
To put a fine point on it: Ideas are cheap, I'm full of it.
them! I'm full of them, those ideas. But execution is fiendishly difficult and not for most people (hey that's me!). So from my perspective people trolling for ideas is wayyy far down the mostly harmless spectrum of game development because the chances that anyone is going to create even a kindasorta Stardew Valley-quality game (which itself would be quite good) is extremely unlikely.
Ideas are the easy part, execution and attention to detail and sprites and music and animations and character development and incidental sounds and a feeling of an integrated community are each big problems to be solved and very very few people are up to the task. We know of one. There are a few other dev teams making Stardew-adjacent games which are alright to excellent.
But trolling for ideas? That's like going to the beach and asking people where the shiny rocks are. Sure they may point you over there where there are a few more but you could have found those on your own with little effort. Now ask them where the nudibranchs are. Or the conch shells. How 'bout the razor clams? Maybe you get blank looks or an informed sunbather tells you need a beach 2500 miles away. That's the harder stuff.
Let's see what happens when they start asking questions fulla lotsa these: { } " "
That's when the fun starts.