In my various geeky wanderings I happened upon YouTuber "Digibro," whose channel is all about in-depth studies of anime, both of specific series, and of the relationship between anime and western animation, the cultural divide, and so forth. There's a lot of interesting stuff there! But he also posted "Speed Racer (2008)– My Favorite Superhero Cartoon," for which I just want to give him a giant hug. Please watch.
He also pointed out, which I didn't know, that Film Crit Hulk included Speed Racer as one of his favorite movies. This made my little fandom heart go squee.
So yeah. Speed Racer really WAS that good. Suck it, all you critics who pronounced it DOA.