For those that are questioning why anti cheat tools are not released publicly for "proof" let me give you a real life example.
Most companies nowadays spend a large amount of their budget within cyber security - protecting private and restricted data (e.g. a list of all customer information - address/credit card info etc) This is why they employ ethical hackers, pen testers, cyber security teams to test their systems for vulnerabilities.
If a company has a very secure system that stops breaches of security to protect their valued data why would they release these details/make them public so that then hackers can understand the logic behind the security and find a way around it? The exact same thing can be said for cheaters in games - no eSports platform whether it is ESEA or FACEIT for example release the way their Anti-Cheat works and detects cheats, otherwise hackers that write their own custom cheats will find a way around this. You are essentially exploiting pockets/holes in the system when you cheat, if you had the source code it would be very easy to cheat just as if you knew where all the "tripwires" in the Anti-Cheat were, you would be able to get around it a lot easier.