I don't know, when you consider the building placement, henchman spawning, contract spawning and movement, mask spawns, art or jewellry spawns, and the chance of getting a lantern instead of coin (this will screw you up at some point!), there's a fair bit of RNG here too.
Chaos Reborn's RNG is strictly tied to your deck and what order its dealt, your summon percentages and your attack percentages. That's pretty much it. I think the thing that pisses people off with it is the roll is invisible and the result instant: success or fail. Bam. It wears its RNG on its sleeves and doesn't hide it.
Armello, which is hugely popular compared to CR, I'd argue is even more RNG-tastic. The difference with it is that rolls build and decay, there's a buffer between success and failure; a literal dice roll, a coin toss, pieces being eliminated one by one. It's cosmetic but it's enough to make players feel 'better' about failure and adds a tinge of excitement to the process. It doesn't necessarily change the RNG though.
I'm kind of fascinated by the relationship between RNG and how its perceived and experienced. This might be a thread topic in itself actually...
Edit: I do agree with you though; Antihero's moment-to-moment play is almost entirely deterministic but the board is laced with RNG elements that can really throw the spanner in the works.
Edit edit: I suppose Antihero's RNG is in external and indirect factors, while CR's is internal and direct.