If "not tolerating the intolerant" is not actionable, it is just mindless rhetoric.

It is actionable. That action is simply not "world conquest", jesus fucking christ. Is America itself a society in which the intolerant have no power? No, it is not. Maybe first it could think about clearing things up in its own borders before trying to use that excuse to invade the whole goddamn world. Indeed it is the intolerant who currently have power in the US. You seem to be projecting your own desire for invading Iran, which is completely incompatible with the people in power's actual reason for invading Iran. They are not invading Iran to make life better for Iranians. But you believe invading Iran to make life better for Iranians is justified, so you lend your support to the current administration, even though that is explicitly not what is going to happen as a result of your support. You are, in short, a useful idiot[1].

[1] https://en.wikipedia.org/wiki/Useful_idiot