If the opinion is shitting one something because it's short or not to your liking, borderline implying it's a scam, while you didn't pay a single cent for it ? Then yes, your "opinion" doesn't weight shit.
This site is littered with entitled people that think because they took a few minutes to download something it means they're owed to whatever they demand. Loudmouths pretending making huge monthly updates is as easy as taking a crap while having never touched gamemaking themselves.
So you think because you have cerebral activity (depatable with some people though if you ask me), you can say this game is shit because it's short, imply it should be removed and forgoten, and be right ? While not even giving a chance for new content to be added as per the Developer Note says ?
Then, yes. That opinion is useless.
The idea that people have to have "weight" behind their words through some weird bullshit criteria you've created in your own head is hilarious when you're sitting there kicking and screaming about the opinions people share on a forum like they're personally insulting your family. No one needs to "pay" to have a valid opinion, and they certainly don't need to create a videogame to have one, either. You could always simply.. respect that they don't like how the game was developed?
I don't know if you think you're some kind of champion here, but the only one who looks like an "entitled brat" has been you throughout the discussion. The fact is, the game was released as "completed". It's also advertised with MULTIPLE romance interests, two minimum with them outlining Becky *and* Sara. Do they also specify that the core content is simply focusing on Becky? Sure, in a footnote under all that.
It's perfectly reasonable that people aren't a fan of his model, where you release it "complete" in early access with the content that should have already been there as "future DLC". You don't have to agree with them, but you also don't need to act like your championing a cause and that your superior and everyone else is "shit".
Anyway, games alright. Will be better if they actually finish it.