Claude Fable 5: Why Anthropic's Most Powerful AI Was Suspended?

Why it was suspended? can Claude Mythos and Fable 5 create what we have in imagination? I believe Security, Firewall is the issues. Because it can breach these two things, then i can guess that anyone can solve any problem.

I want to know if Anthropic reduced the power and capacity of Fable 5 and Mythos?