Puzzle games are indeed an odd niche these days. They aren't flashy and I'm not sure how much streamers like being on camera stumped by a puzzle. They're definitely a "try it and you'll see why it's good!" genre. So I think it will all just come down to word of mouth. If someone really enjoys a cheap puzzle game chances are they know someone else who'd like it too. It's an easy recommend since you aren't telling someone to drop $70 on a 40 hour game. You're saying "Hey, for the price of a coffee you can get a few hours of fun out of this and you can dive in for 10-20 minutes a session.".
I've had the Steam store page up since mid October. My zero budget marketing doesn't seem to have a big impact on store traffic. I'm averaging about 3 wishlists per day and only have 82 wishlists total as of this morning. So the lofty heights of 10k are definitely out of reach.
I've decided to move forward with the release since I don't think my efforts are going to increase traction and perhaps once released the game will popup in people's "more like this" queue if they've been shopping for similar types of puzzle games.
The other reason is to eliminate all the anxiety and apprehension I have about the launch. I've had trouble shifting gears toward the next project and I'm pre-emptively depressed that my game is going to sink like a stone in the Steam sea.