Rieder is an actual NHL player, a winger, and a good one, and what the Oilers need more of. It shouldn't be hard to follow why I would prefer Rieder on the Draisaitl line given the two are very familiar with each other, enjoy playing with each other, and have done it a lot.
On the other hand I have no idea why people would so consistently obfuscate against that most likely of combos occurring.
In what way has Rieder been given "endless opportunity. He's played 3 games, 1 with Drai. Only one, his first game.
Again, Yama has not looked fine "all preseason" and the prospects team was actually quite good with Caleb Jones, Bouchard, Benson having strong runs. It seems as if you didn't even watch those games. Yama was pretty much invisible in those games.