Diablo is an ARPG, a term that is admittedly fraying at the edges like an overworn bag. We obviously mean different things when we talk about action RPGs like Diablo, and action RPGs like The Veilguard, but it's a genre descriptor we use nonetheless. It's like CRPGs—yes, CRPG means something specific (an isometric RPG with a big story that's typically either turn-based or uses real-time pause) but the words contained within the acronym are borderline useless. 'A roleplaying game you play on your computer' is about the broadest umbrella you can open without getting a call from NASA for mucking up their satellite images.
You could argue that, being the genesis of the genre, Diablo has the rights to a soulslike naming convention. Unless, of course, you're the general manager of the series at Blizzard, in which case wondering out loud about whether we could all pretty please start naming future ARPGs after you is, well, a little desperate. Cringe, as the kids might say.
