> How is this gloating?

he is emphasizing that they used their own words against them. everyone knows the security threat is a pretext. the message is that he is smart and they are stupid and he won, which is what I call gloating.

> "Those trying to misdirect and tie this action to the prior DoW/Anthropic issues are wrong."

an obvious lie, which is inserted to emphasize that it is a lie. when you purposefully lie, not to deceive, but with the intent that the counter-party knows you are lying and must accept the lie, that is an assertion of power.