I see your point, insert any professional athlete against an amateur/beginner athlete (pitcher versus batter, striker versus goalie) etc., the same mismatched result. Chess.com rules for a second account include no speed runs.
I played a streamer once on chess.com (there is a warning that pops up, you have to agree to it) when the unsolicited game popped up for me to play. Early end game I messed up and my opponent had mate in 1 (kind of hidden). A viewer posted a comment mate in 1 (to my opponent, this was a rated game). My opponent was looking at the board and continuoulsy commenting and missed the move and seeing the illegal comment until about 2-3 moves later. Then he went on a rant about missing an easily won game, lots of profanity (he warns about that in his streaming disclaimer). I ended up winning the game. But if you play a streamer and it's rated, there's nothing you can do about spectators in effect cheating against you.
It was interesting watching the game afterwards, he tried a Scholar's Mate attack against me for a quick win and I defended it with a knight. He went on a full on expletive laden rant about hating the stupidity of that defensive move. 
After all that (I didn't know about any of this during the game, you can't hear it real time) I texted "good game" and he grudgingly agreed. A different experience, it has only happened to me once in 1,984 games.
A few days ago, I watched a YouTube video of Hikaru doing one of his "Botez Gambit" speedruns - where he sacrifices his queen against low-rated players from his own low-rated account, then proceeds to dismantle them, one by one.
One by one, his opponents made blunders - typical of players at their level. And time after time, Hikaru shook his head disappointedly, or rolled his eyes in annoyance at their poor moves.
I found myself shaking my head, too - but not at his opponents.
I don't think speedrunning is positive thing in the chess community. I view it as what it essentially is - experienced, high-rated players beating up on lower-rated players for the fun of it.
Sure, I understand the spectacle. Viewers enjoy seeing their favorite streamer dominate in various, creative ways. Or, they enjoy seeing how players of their own level would get decimated by a Super GM.
But what about the players on the receiving end of these defeats? Losing at chess can already be demoralizing enough, especially for players who are trying hard to improve. When facing someone like Naroditsky or Nakamura (two of the strongest blitz and bullet players in the world), even I (a 2300-rated player) would find my position being torn to shreds. Even my best moves would look pitiful, and would induce eye rolls from my GM opponent. I would feel, after the game, as if all my progress over the years has been for naught.
How must it feel for the 1000-rated players, then, to be crushed so mercilessly by a player who appears to have a similar rating to their own?
Yes, I'm aware that points are refunded after the game. But this doesn't erase the psychological impact of being humiliated, on stream, in front of countless unknown viewers.
I'm a fan of Hikaru, Naroditsky, and others, but I'm not a fan of speedrunning against low-rated players. If you want to sac your queen for memes, or if you want to play 1.g4 / 1...g5 against everything, do it against players at your own level - and try to prove that you can still win.
Otherwise, I consider it just stomping on novices for cheap views. It's sandbagging. Chess bullying.
It's lazy content that's designed to discourage and demoralize novices - the same kind of players that these Super GMs once were, themselves.
Perhaps worst of all: it encourages viewers to make their own speedrun accounts, to do the same thing, just like they've seen their favorite streamer do - creating a snowball effect that can only do more harm than good.