After taking a closer look at the accounts leaving weird reviews, I found most of them were spamming reviews on very cheap (like up to 2 dollars) or free games. I don't think they're particularly targeting you, I think they're trying to farm Steam Points cause apparently spamming reviews helps with that a lot. Valve seems to interpret people leaving a lot of reviews as supporting the games without considering if it could be spam, but I think that if your full game isn't too low on price then this might not happen to it. They're all a bit weird and they seem to just pretend to play most games, but they do seem to just play some, so I do think they're just trying to farm for Steam Points.
I do hope that's all there is to it and I'm sorry if this caused you stress during work, the game does look nice and I hope you get to finish it. Best of wishes.