I actually missed the bulk of the soccer challenge but the Welsh Poem was one where I thought, whichever Afghanimal was reciting it, wasn't pronouncing that "II" sound correctly, or at least not held to the standard of the other contestants. But he did offer a lot of inflection with his recital, whereas, the son (totally blanking on names right now for some reason), was kicked back for having too little emotion behind his recital. I thought that was kind of a crock. You learn to recite a poem in a foreign language in 30 minutes and you don't even know what it's saying and you are held accountable for the emotion? Yeah, that was a little weird to me.
I've long felt the show has "fixes" in but not necessarily in a dishonest way if that makes sense. I do think they make sure each team faces challenge that's specifically designed to pit them against their biggest fear kind of thing based on a personality/psych test taken in advance. That's not really a fix though. But I do think they set up a bad cab driver at time but not so a specific team gets that cab, just random. I think the alternate flights that get delays are fixed but again, I believe it's just setting up the flight that way, not any specific team taking that flight. Years ago, there was stolen backpack that I thought was totally fixed, so yeah, I think there are things the producers put in play to steer the show.