>>40232794No one except autists are actually going to watch this in full, anyone with even a quarter of the brain will just keep up with a news outlet or check the Twitch Clips once the stream's over, and even then they'll probably release a proper trailer for any new Pokemon shortly after it ends.
It's just a shitty yet effective marketing gimmick to get people talking about it so they can make memes about it, and the memes provide free PR, and free PR means more interest, and more interest means more sales, and more sales means Nintendo's investors are happy.