If you will try cash games on https://swcpoker.eu/ there is a fairness check before the game start: all get one card from distribution and shows it to all table. This is proof of randomness of game RNG.
This is what i didn't see on some other platforms, such as sportsbet
I think that when a site shows its good faith and proves its fairness it is a good thing.However showing one card from each player so anyone can see it on the table makes the game somewhar boring and predictable and I don’t think showing a card from each player is a good idea.They can come up with some sort of hashing seed or something similar which anyone can check before and after cards are shared.