They absolutely do, because packets regularly bounce across state boundaries even if I am just sending a message to my next door neighbor. For example, my phone service provider is headquartered in a different state, so using their network to send an SMS message automatically creates an interstate nexus. If a US attorney wants to take over a case for reasons of professional or political advancement the argument is trivially easy to make.

Packets regularly crossing state lines doesn’t mean they always cross state lines.

Good luck representing yourself in federal court.

Weird take but ok. I understand the assumptions of the law don't always reflect reality. Why would I defend myself?

You claim that packets always cross state lines because sometimes they cross state lines. That's not a logically consistent statement.