I don't feel it's "hyper", it's only 8 crystals instead of 10 for guaranteed Noelle. Other (non-tutorial) pull categories have something guaranteed for 10 crystals, what exactly they guarantee changes depending on current events and such. Classic pulls category is 10 crystals for guaranteed 4+ star something, which can be character or weapon.

to give them enough of a dopamine rush to hang around and be more likely to spend more later

"Dopamine rush" sounds like a bit of a stretch, because normal gameplay here with tons of randomized minibosses, minigames and puzzles, all of which reward you fancy chests with random loot in open-world, gives way more dopamine every few minutes, and the whole gacha thing feels quite underwhelming compared to that in terms of neurochemistry.

Give it another week and you will find that the supposed good luck runs out, as well as the free currency offered for things like logging in, and then it will start requiring a ton of grinding or real world money to acquire the necessary currency to get to the “pity” in order to ensure you get a top-rarity item. That’s how gacha systems work.

Sure, I will be looking carefully at this dynamics as I progress. I find it quite surprising what you're describing is still not there.

and can’t last or elee the game will not make nearly as much money

Who knows, maybe it makes enough money even without being that pushy? For me it's too early to say.