I know it takes time to handle accusations and some times, community will have people who believe in invalid accusations too. So it's better if a casino can have their preventive tools to break down bot operations as earliest as possible.
It's not that simple. Bots will always exist no matter how much sites improve their security protocols. Why? Because new bots will popup in place of old bots pretty quickly through minimal time and effort.
Social media sites like Twitter are also pretty bad at dealing with them and it has gotten worse ever since Musk took over.
As I said before, it is impossible to eliminate 100% of bot usage but at least the casinos have anticipated to be able to reduce the number of bots that enter. I agree wth you, that it is not as simple as what we think, because as the words I often hear, "cheaters or bad people are smarter" and they alwasy have ways to find loopholes and then they are still into it.
It's a tough job for a casino and I'm sure we all have the same thoughts on this, especially now that it's the modern era where it's easy to outsmart things.