The forum is more reliable than any other source, at least here we can read real comments and not those that are only paid by the gambling site as their way to market to clients. here also, if they will not solve any complaint, that would affect their reputation and it will very visible as DT members will likely tag them for that.
You are right and I agree with you that forum is the best reliable source to know which gamble site we should use and which we should not. From this platform we are able to understand which users are commenting perfectly and which are advocating a gambling site to promote a gambling site. Only newbie account and account with negative trust can post false information others will not do that ever.