Pretty much what chum said. I don't understand why some people are so protective with their own things they shared on internet, especially when they are meant to be shared to everyone. Unless of course, you openly said not to distribute it without credits or someone claims your stuff as his/hers. I think everyone is smart enough to know whatever may happen when they bring something into public.
Of course, people are smart enough to know that whatever they uploaded won't magically vanish if they take the original source down. However, that doesn't mean that it's okay to keep circulating it. It may be the norm, but that doesn't necessarily make it okay; I'm sure there are plenty formerly teenaged females who can confirm that (though that would be a more extreme case, of course).
Asking a non-English speaker if it's alright to upload their replay is just awkwardly wasting their time. I think there's such a thing as trying to be too respectful and I think that applies to this situation. Holding back on uploading these NMNB runs for the reasons provided is, in my book, simply ridiculous. There's a difference between video game replays, something that's meant to be watched, noticed and learned from and which is not of any significance to anyone who doesn't own the game the replay playbacks on, and someone's musical piece or the like.
You're on a slippery slope right now. How about that avatar that you're using. That's a picture someone made, did you ask them for their permission to use that? (Maybe it's your own picture, but you get the idea) You'll probably think that I'm using a ridiculous and extreme example right now, but if you believe strongly enough in your own logic, you will eventually reach the conclusion that no, it is disrespectful to use their picture without asking them first. There are instances where you can and should apply this logic and I think applying it to a replay that has already been publicly shared is going too far. If It's about a replay that was privately shared then I could understand if someone wouldn't want it spread around, though.
That's a picture of my dead cat, you hippie-communist.
Just kidding, though it really is my dead cat; died a little more than four years ago.
Regarding that conclusion you mention - that is the exact conclusion I arrived at a few years ago, which is why I refrain from using pictures without authorization, linking to their source instead of directly linking them etc. etc. .
I don't believe there is such a thing as being too respectful; some things may have become common on the internet, but, as I said before, I don't believe that makes them right.
I do agree that replays are different from other copyrighted material. However, it is not mine to question why someone would no longer want their replay to be circulated. It could be because they don't want to spread a strategy, because they're ashamed of a mistake - any reason, really. Someone went through the work of creating the replay and they don't want it shared anymore - I oblige.
Granted, I understand that my stance regarding this whole matter might be considered extreme because there is a certain convenience to disregarding other people's feelings, no matter how minuscule the issue may seem. It is for that exact reason that certain behaviour is being deemed okay on the internet (that and, regarding more serious issues, some people being inconsiderate scoundrels, of course) when it's not, but people should be aware of the environment they create. I don't feel that this convenience is worth the price that the people who do upload their works have to pay.