Depends, is it real human or bots, from targeted links or not, paid or organic? These are what I mean by "traffic is not a useful metric for measuring the casino's performance."
I disagree. Traffic is everything and it is what most people check out to observe whether a particular site is doing well or not. The first thing that any customer would check while researching a site is traffic (Alexa ranking, Chat room players etc).
The traffic can be natural or artificial, but the numbers are what matter at the end of the day. Mintdice is doing really well in this area and are improving in a short span of time making them a competitive site in the crypto gambling realm.
Traffic is important but also interaction is quite important as well. Just to give an example from a very very obvious website. Let's say you go to a youtube video, the video is watched like 100 million times (doubtful with just bots but giving an obscene example) and there are just 100 comments and few likes, wouldn't you think that video was manufacturedly that high on viewer count? You probably would, and you wouldn't subscribe to their channel.
Now of course, there are good ways to use bots, for example if you are too down the list and getting some bots would mean it would take you higher on the list and you would get more viewers who think you are good thanks to it and you would need less and less bots but in the end it is not a long term solution.