In games it is definitely nice to have. I’ve built multiple online trading/collectible card games and it’s a necessity for those. Don’t want your players predicting what cards will be drawn/in what order.
If the game deals with real world currency I can see why it's important, but if it's casual I'd say players trying to predict card is a very fun puzzle game on its own, imagine the intensity of a PvP card game where both player are playing cards against each other but at the same time trying to decode the PRNG algorithm, that's some quality emergent gameplay right there.
