I looked through 3 discovery queues today, the first time in a while. I don't know if they changed something about the algorithm but it was particularly eye-opening.
There were at least a dozen (apparently) really well-made, unique games I had never heard of in there (and while I'm probably not as "good" at hearing about everything in gaming today as I was e.g. 2 years ago, I'd say I'm still easily on the enthusiast end of the spectrum). It seems like a rather terrifying prospect to enter the games industry with a new, unknown indie game today (even if it's good).
That said, while some of those games clearly had trouble finding an audience (and were most likely financial failures) at < 100 reviews, a surprising number of them seemed reasonably successful (>1000 reviews). So there's that.