The broader issue is of “target audience” vs “actual audience,” and what to do when there becomes a nontrivial disconnect between those two groupings of players.
To illustrate my point, quite literally, here’s a meme:
I think D3 vanilla - as in, the actual original launch - may have been intended to be “sweaty tryhard” much in the same vein as PoE. Inferno mode definitely required cheese and/or wallet warriors! But, after the RMAH got taken down and Loot 2.0 was implemented, I think there was a paradigm shift. The D3 we have now, is NOT a “hardcore” experience when compared relative to other titles on the market.
And now that we’re in Maintenance Mode™, I think the pudding’s never been more proven. Leaderboards? More like Cheaterboards, amirite? World firsts? Done within hours of season launch. Seasons themselves? Maybe they’ll start on time, maybe not! I guess it depends on whether someone remembered to feed the hamster in the server room every few months.
HOWEVER!
I still don’t think this game is “super casual.” We’re not exactly “Candy Crush” levels of gaming, here. Especially for those who want to explore seasons and do bare minimum levels of research, I think there’s plenty of resources out there and plenty of places to ask clarifying questions.
(you might have to deal with a sarcastic butt like me, but we’ll still get you the answers)
EDIT: So to reiterate my point, I think this game’s casual enough that sure, not EVERYONE is going to think about Altar, research Altar, or even realize there IS an Altar. At the same time, two things can be true at once: “most people” who post on the forums, post in reddit, post on discord, Google wiki’s, are probably smart enough to learn the intricate ins and outs of this game.
(provided they’re posting and participating in good faith)