Glad you liked the vibe, that was for sure the main focus.
The way it is implemented in this game actually does make it more than just picking at random and luck.
Being able to choose between calling and forfeiting can make all the difference between winning and losing, and I've seen from playthroughs that players who call every time have a much higher chance of losing vs players who only call when necessary.
Also, the hand you play does actually matter, because the opponent does try to 'adapt' to your play style in some ways. In the end, it is up to chance whether you win or lose, but that's not to say you can't learn a strategy to sway the chance in your favor.
It definitely could've used a better gameplay gimmick, but it's not complete luck either :)