It seems very unlikely the US would take the approach of shutting down the internet to prevent communication. All the internet infrastructure is hardwired for US surveillance data collection, so it's already a perfect honeypot. Why shutdown your honey pot?

More likely to be useful in the US is communication that is actually private, secure, and not centralized, but the underlying communication channel if unlikely to be relevant. Signal for example would almost certainly have thier IP blocked in the area, or their servers taken down because their completely centralized and therefore easy to block. Realistically something that can leverage an adversarial network to implement mesh communication that can be obfuscated (so it's not easily detected and blocked) is more useful in the US.