There hearing is the most ridiculous part of this whole joke. Serious it is completely unlegit. Let me try and explain why.
As Trev as shown us, yes there is a passive Ototon skill which increases the users hearing, and ability to hear, and filter the sounds possibly. However, he also stated it wasn't to the extent people had once abused.
Now lets look at the actual situation here. Rakudo walks into the village, Yujo is in the center of the village, easily a good few kilometers away. Now, how does Yujo being able to hear everything with in that radius of himself make an sense at all people? Really?
First of all, lets think for a moment, as Rakudo pointed out what would happen if he did listen to all of that all the time. How would he even have a normal conversation as he was at the time? 'Oh sorry, I can't hear you over the other thousand or so voices in my head guys.' So yeah, Rakudo would be spot on with the effects of what happens in that case. Also I like how Nathan tries to appeal to Superman here... really dude? Really? That's laughable.
'But wait! He can filter through, and just focus on Rakudo's voice!' Okay, makes sense... if he had a reason to focus on Rakudo, which he didn't. I'm pretty sure the barrier theory of why that might have alerted him to Rakudo has pretty much been shown to be stupid, even then in Yujo's post he acknowledged no reasoning as to why he heard, just he magically did. Perhaps Yujo filters through all the thousands of conversation at all points? Checks if there is anything worth hearing going on? That's complete rubbish too, the amount of processing power to do that would far exceed his tiny brain, and even if he could, what's the chances he would catch one little comment spoken far far away, with the crowds of the village all around him?
And lets not forget at the distances spoken hear, that sound which actually take a finite time to travel, so when Yujo heard this, Rakudo would have moved from the location at which he spoke it, doubtfully much, but still would have moved.
So there is a few reasons why the super hearing claims are complete and utter crap. I won't even start on the rest because once this is thrown out, there is no need to complete the others.
Everything Kaito said.
Hearing everything around you super clear is all well and good, but being able to suddenly pick someone out because they are headed for you? Meta-gaming pure and simple. Maybe if Rakudo had yelled above the crowd to stand out it would make sense to focus on his voice, but all he did was talk to himself at a normal volume.
Hell, even if you could sense the Hachibi's chakra and go "oh shit, what's that chakra? I better focus my attention in that direction." It would take longer than what Yujo posted to find Rakudo, and then he would have missed what he had said entirely.
Honestly, I'm not even looking at what Kirk or Rakudo did in the posts because I can't get over how we're just letting this auditory thing slide.
