I think is not wise to give 5$ without any string at all and can withdraw it straight without using the fund, IMO just set-up the turnover 1x time. You also can gite a good feedback from that rather that these rules.
They will also receive feedbacks from Bitcointalk community without offering any bonus for that, but it will take some times. The 1× wagering requirement isn't going to make any difference there as it could be done easily in the dice game. I had received $5 from them and lost it in the Dice game within a few bets. I will check the website later with deposits. BTW, I had heard in a telegram group that Shuffle.com bonuses are similar to Stake bonuses.