Trying to argue for and enforce a 'you may not use our product for an express objective of the US military' provision is pretty clearly "trying to dictate". Actively cancelling, moving capabilities behind a 'safety' wall, or even threatening to would be a clear sabotage of the US military's operational capabilities. It'd be one thing is Anthropic merely expressed an opinion, but my understanding is that it was/is an outright 'we will not allow' as opposed to a 'we'd prefer you didn't'.

Imagine if Microsoft tried the same with excel or power point. "um actually in the fine print of the EULA it says you may not use our product for military purposes so we will revoke your access unless you stop using power point for mission briefings that might result in the deaths of civilians". Would fly about as well as a lead brick.