Why couldn’t the leaker turn the system on?

I want it to be real, and it probably is but something doesn’t make sense:

Even if it was previously connected to wifi, they’d still need to reconnect it to a source to access the internet and be discoverable.

Unless the system has a SIM card or something, how would turning it on jeopardise anything? Or am I missing something?

Edit: I’ve been seeing devkit, according to the pics online, the original switches devkit had not dock and looks different from the final switch