Earlier quoted context omitted.
Well that is how Airtags work. Any iphone/ipad/mac nearby will act as a router for them[1] Given that we have already established that LG is a shady company, I wouldn't put it beyond them to try to use the same trick. [1] https://lifehacker.com/tech/how-apple-airtags-actually-work
That is not how AirTags work. They do not reach out to Apple servers at all. AirTags broadcast an encrypted ID. Phones build lists of ID’s they’ve seen and send the list to Apple. There is no routing, no ability to send arbitrary data, no active communication of any sort. It’s not a mesh network. The link you posted makes that pretty clear.
it means you can’t block the tracking by doing anything yourself - you’d also need to block everyone else’s devices too.