What do you think of people who upload complete streams to larger Twitch streamers on YouTube?

Without the permission of the respective Youtuber

As long as they don't monetize these streams and the streamer himself wears VODs, it's actually fine, because the streamers don't earn anything from the VODs on Twitch and the channels don't earn anything from the uploaded streams.

But if they then advertise, it is imo no longer fine, since they then hardly make money with hardly any self-work or the work of others

As a consumer that's good, for those who upload it it's good because they get subscriptions and clicks and for the streamer it's also good because they claim and monetize the videos themselves…

inform yourself, the money gets trzdm the streamer

Is wrong

What's wrong with that, justify your opinion

Since when is an opinion wrong?

The last section is wrong

Do not mean the opinion of you but "is wrong" before you refer to yourself

A lot of people do this just to get attention, which I find pathetic, because they just copy other people's content unchanged…

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I clicked mine, of course, I don't like it.