The only gambling industry in the current bearish market is moving at their own way. At this time every gambling site is sophisticated. The first thing that attracts gamblers is the design of the site. Then they try to understand what is inside it. I can't access to your site but it seems that the mentioned script may be from an old site or it can be restricted for some countries may be.
Yeah it is restricted in other country as it was mentioned in the early posts(i hope I remember it right) and you are correct that the site seems an oldschool but reflect the likes of older gamblers.
maybe the upgrade will come soon as OP is interested in this updates.
lets see what comes in the future as their site is still under upgrading .