On the other hand, even if there's a draw option you can always avoid it by taking the Asian handicaps which have +0.5, +1.5, +2.5, and so on, or you can go with the draw no bet option as there are times when draw no bet markets have higher odds than the handicaps.
Yeah, but it will become draw win/lose situation, not draw no bet...
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.