[Drammach]

thanks to the explosion of broadcasting and wireless communication over the past couple of decades this planet is now the brightest object in the galaxy in the radio spectrum.

Interesting and possibly true.. ( it may just be human ego, too. )

The Broadcast "band" is a relativly low frequency portion of the electromagnetic spectrum.. just somewhat above the "bottom", where audible sound lies, and far below visible light..
Not sure it would attract much attention unless someone was specifically listening in that frequency range..
Considering "decades" as a time line, even 50 light years isn't very far, astronomically speaking..

[agere_contra]

Consider this. Any alien race six to fourteen light years will think Clinton is President. Now you know why they're not talking to us.

[Squawk 8888]

Interesting and possibly true.. ( it may just be human ego, too. )

I don't discount the possibility that it's an urban legend, but given the fact that over just a few decades the amount of radio energy has increased so much I'd expect it to be noticed, IF it's reached any other world with the technology that could see it.