It should be beneficial for the casino to try to identify errors/problems in the operation of the website or casino software. Because the financial security and profit of the casino directly depend on this. Any sane casino will offer rewards for finding bugs for white-hat hackers and ordinary users, or even organize hackathons.
For sure before a casino is launched, there is what operators always do and that is make sure to test all the system of the casino systems to make sure they are bug-free because any casino that has a bug problem will likely not succeed in terms of revenue generations which is an integral part of the casino operation.
Some casinos even give incentives to expect bug hunters to run several private hunts on their systems before the site goes live, The majority of the casinos that crashed along the way are all doing so because of a lack of proper bug tests and exploitation of the system via the bug or other system failures.