Greetings, so I've been curious for some weeks now, you can find videos of people spending in lucky stars or konoha tree but why is there nobody speaking of amu*t park?

Obviously in terms of value people seek to spend in events like lucky stars during a fuku rebate since you get refines and potions, but i'm wondering why there's nobody attempting to get something out of amu*t park. I didn't even find a single post of someone saying "I spent 60k in amu*t park and got x". There's 0 evidence.
There's been times when I've seen Orochi gnw, obito ttj, pain 6 path and hashi edo in the same wheel, wouldn't I get any of those if I'd drop over 100k coupons in that wheel?

So these are my questions to the community:
- does this event have a terrible rng? is that why nobody spends there?
- has anyone spent large amount of coupons in this event?