what other types of online casinos do you think gamblers should avoid? You never can tell, your advice might help someone in a short of long way.
I want to add one factor: if a casino started to delay withdrawals it's probably a sign that the casino have some difficulties finding liquidity or is using your money for other things. Apart from this, I don't know what makes players go to unknown casinos if all type of games and sportsbook are available on the well known trusty ones which are easy to be detect using this forum as it has many threads that rate most of crypto casinos in terms of many aspects, making it easy for any player to make decision about which casino to play on, so everyone should be responsible in case they got scammed.
Well, delay in processing withdrawals can sometimes be as a result of bad network on the blockchain, that is network congestion, I could remember some few year back when Ethereum had a really bad network, at times, when I send a coin over to someone, I will be showed the tx id, but when i search that tx Id in the blockchain explorer, nothing will show up.
This is not me trying to defend any casino that shows up with this attitude, all am saying is that this should be considered as well,, not just to jump into conclusions that they are having liquidity issues and all that.
But on the other hand as well, you are right, there will always be a sign before any casino will completely go bankrupt and possibly run away, starting to delay the processing of withdrawal, which they normal process faster before, could be a sign as well.