The cops made this list. The idea that a smartphone can do everything a Raspberry Pi can do, and more, is a concept so far beyond their level of understanding that the discussion is pointless.
This is not really accurate though. Both a Raspberry Pi and a Flipper Zero can easily and readily be turned into a signal jammer or spammer with off the shelf parts and nearly no technical skill. Modern smartphones are generally both more locked down and also don't come with an external antenna option.
> The cops made this list.
with the help of which LLM(s) ?
Since smartphones are already locked down by their vendors, the cops have a point.
"no no officer this is an orange pi! an orange pi!"
Sibling comments have good points but in addition: there are a great many legitimate reasons to bring a phone to the inauguration and many fewer legitimate reasons to bring a Raspberry Pi. These guidelines aim to reduce risk, not remove it entirely.