It does feel like some teachers are a bit unimaginative in their method of assessment. If you have to write multiple opinion pieces, essays or portfolios every single week it becomes difficult not to reach for a chatbot. I don't agree with your last point on indoctrination, but that is something that I would like to see changed.
Yes is the best answer. They got a lot of votes from the Jury, because the song is musically one of the more impressive ones (subjective ofc). But, the audience also gets to vote, and can vote for whatever reason. Like: best song, nationalistic reasons, most catchy song?, identity reasons, Song of an artist that makes a statement. Similarly the jury is not immune to these thing so there is no such thing as a subjective vote for best song. So... Yes