You didn’t offer a single hypothesis why would it happen — today.

You conveniently retreat to a bygone era that now exists only on Wikipedia. Casso is featured in its last chapter. His body count and devilish violence were the roots of his demise.

Where’s the contemporary Anastasia? Why would he risk it? Why would all other admin members allow him to act like that?

Combining members and associates, that rough number isn’t inaccurate, at least in NY.

The fact that a couple of underboss positions may be vacant at this moment is irrelevant. Higher-ups will be there. The point remains: if you believe that a Lorenzo Mannino-type is willing to put on a balaclava, do stakeouts and then commit murder, with all the upper caste being down with it, then I applaud your imagination.
Because there’s nothing else worth applauding.