Use it on your own risk and just like been said above sportsbet do have major issues and if you do tried to look up on trust history on the Gambling site forum account here :
https://bitcointalk.org/index.php?action=trust;u=832366 you can presume that there are lots of negatives which will give you hesitations but still there are gamblers who do still engage or make bettings on the site which its still operational until up to these days.If this is one of your option then you can try out if it would suits you out.
Right. Every major gambling site have their own issues. Might work for you, or you might find yourself posting on of the threads that you've linked above. I gave a few friends who's spending quite a lot of time im sportsbet.io and i've personally tried using the service, no issues as far as i'm concerned. Try it out. You're already gambling anyways 😁 in the end, it's just about handling your money responsibly regardless of what site you're on.