Looks cool and well received but at ~300ish reviews hardly a shining beacon if we extrapolate sales from that. But I'll say that's a good start.
When evaluating a newer technology, the key question is: are there any major non-obvious roadblocks? A finished game (with presumably decent performance) tells you that if there are problems, they're solvable. That's the data.
What it tells me is someone shipped something and it wasn’t awful. Props to them!
It doesn't tell you anything about velocity, which is by far the most important metric for indie devs.
After all, the studio could have expended (maybe) twice as much effort to get a result.