All casinos will have unhappy costumers that will scream scam but all issues need to be investigated also. Haven't followed really in detail the ongoing accusations but all cases need to have proof and hopefully it all gets resolved quickly.
Don't forget that there are people who want to blackmail betting websites knowing that the forum have a habit of being hard against betting sites. Several times after having long discussions it turns out the accusers were manipulating to take advantage of the sympathy the community shows. So unless an accusation have enough proof, it's completely waste of time for everyone and harassment for casinos too.
You forget, or neglect, that in many cases the accused party (me, for instance) cannot prove his innocence, because it is impossible. That is why in most countries you are considered innocent unless proven guilty.
How would I prove that I only have one account? I cannot think of any way to definitely prove that I only have one account. If you can let me know.