Ah no worries, though I'd go all the way and say all RPGs with leveling systems have incremental mechanics! After all, progress quest is probably the first thing we could call a incremental/idle game, and is fundamentally just an RPG that plays itself.
Some genres are just vague. I call this incremental because it scratches the same itch other active play incremental games scratch for me. Us gamers like to call anything with a leveling system an RPG, but when you look at the history of table top RPGs, there's a lot more to it than number go up. Action RPGs on the other hand are very much focused on number go up.
I did want to add a new game+ where the enemies and upgrades keep scaling, but I ran out of time. If that were in place, would it firmly place the game in the genre for you? Don't mean to come across argumentative, just curious where we draw the line