Not that strange honestly. The government would hate to admit loudly via its own propaganda outlets to the world that "if you attack our bases even a little bit we will leave your country." That sort of proclamation would lead to a clear victory strategy for pretty much everyone who wants the US military out of their country. So it makes sense that they would keep quiet about it.

I think it's cause US know they're not ready for escalation and they're trying play this down for now.

“We’re trying to go to war with Iran and China, not you guys!”