Interesting
Why is the assumption that whatever is out there is hostile even if that is our default position. Why the assumption that whatever is out there can decode what we send? Why assume they are interested in the insane ramblings of those that most embarrass our race Why broadcast what we are made of and what we are like? Why overcomplicate a simple situation?
Surely if we want to get the attention of something out there we need to broadcast a very simple pattern which wouldnt normally be found in nature. Keep it simple and with little chance of offence or our disadvantage