Anyway, I don't think the "draw" here is the issue. If some bookers don't allow "draw no bet," it is probably because they want users to play (win/lose). Let's say you place draw no bet and ranked up thus receive the rakeback/bonus, then the match ended in draw, it will become confusing for the casino.
Also, I guess it depends on how their bonus system work, usually it should get voided and returned but I remember that one of the sportsbook i've used still counted the voided bets as a progression to my VIP level.