ARPGs and action RPGs technically fall under the same umbrella, but ARPGs are generally Diablo-likes like Path of ... anymore. What Does Control 2 Being An Action RPG Mean? So when Remedy says ...

This idle RPG is a spinoff, but it's climbing the Steam rising charts and has already surpassed the original game.

You can't cosplay as a proper RPG if you don't know what a good RPG looks like. Ubisoft has included all the systems and features that you'd expect, but they're thinner than shoji paper.