If the casino owner has connection with people in this forum surely they will create ANN thread in this forum to promote and introduce their casino in the forum. but most of their new casino sites rarely know about this forum even though if their casino uses crypto or bitcoin payments they should know this forum, it's clear here is a place where active crypto communities as gamblers, traders and others gather in this forum.
I also think maybe they don't want to introduce their casino in this forum yet because they think it won't bring in any traffic, so they choose a way of promotion elsewhere or use their social media like other casinos do too, if only they knew that this is the right place to promote crypto casinos. maybe they'll create an ANN thread on this forum as well as run a signature campaign as well.
Don't get me wrong there are a lot of new casinos popping up in this forum and maybe some online casinos out there that haven't been on the forums because they don't know and don't have a team that can operate casinos using cryptocurrency payments.
There are several fiat online casinos in my country and I had a chance to chat with their support regarding the use of cryptocurrencies and their answers were all the same, that is, there is a fear of using crypto and also not having a reliable team in the field of cryptocurrencies.
But in the future maybe all casinos will start using crypto as their currency value and join the bitcointalk forum for promotion.
There is Nothing to do here, only the good things are the ones that prevail , Personally you can Have many good casinos , but if they are not here in the Forum with a thread they do not Trust , I would not risk play in a casino Like this, in the Forum there are many Casinos that have a Reputation and is 100% Verified , I do not know what will be the Difference of having Another outside the forum with that of here, perhaps if they give Free money Because it can be, from the rest I think not that no It would make sense to be Looking for things in or fun in casinos that do not have Enough Confidence , and I do not risk , I Speak for me and I think that Many forum users think just like me.
I sure do agree with you, ever since I started gambling and also became a member of this forum, I have never used a gambling casino outside this forum, and to be sincere, I don't intend to ever, simply because like you said, we already can easily know the reputation of casinos listed on this forum, and because of this we know which casino to play on and which to avoid..
But for the casino out there, we have to depend completely on reviews that are outside this forum to trust them, and such reviews might as well be fake, since I learnt that some casinos now buy positives reviews on review Platforms like trustpilot and the rest.