Just wanted to talk about this video and made a comment in the section I wanted to share
I don't really agree with multiple parts of this video. For starters, I feel as if Fleetway Super Sonic doesn't exactly fit the bill of a traditional "Dark" form at all. In fact, whenever people try to do the Dark Form, they often make him super evil and chaotic for some reason. Despite the fact that Dark Sonic wasn't like that in X. In fact, it feels more like Fleetway than Dark Sonic. Fleetway ESPECIALLY doesn't fit Sonic's character and is in an even more egregious position if you want to talk about mischaracterization.
Then you have Werehog Sonic, which isn't the same either. Werehog Sonic is more of a forced mutation than something natural. For the most part, Sonic is the same. He feels angrier, but not by his own natural choice. Which brings me to Darkspine, which is similar in pipeline to Werehog. Darkspine feels those emotions from artifacts that represent the emotions he feels. It isn't exactly natural, either. It's more of the World Rings triggering this effect. Not to say that these forms are badly-done, by the way. I think both are cool, but not really a true dark form.
Then you have Dark Sonic, which is Sonic who is simply angry within the presence of chaos energy and we know that dark chaos energy does exist if we take an example from Perfect Chaos. In lore, it makes sense and is sound as a concept. I'll also say that people overhype the screentime argument. The screentime doesn't exactly matter. In fact, I think the less screentime this form has enhances the mystery and intrigue of the form. For its characterization, it isn't even bad. It makes sense given the context. I think the Japanese version does it better because I think in the Japanese iteration of Sonic X, Chris was actually stabbed or heavily implied to be so and the level of injury was extrapolated on more such as visible blood. In the English version, it was just a punch (due to censorship). It's why this scene doesn't hit as hard when watching it in English. It's why I think the scene makes more sense when watching the original material because unlike other times where Chris has a few scuffs, this was an ACTUAL injury that's a line not even Eggman crossed at least in Sonic X. It's a lot more personal, more distressful, and there was no Super Form to heal Chris's injury and Sonic couldn't get to him to do anything. Not to mention Cosmo, who prolly had to witness that and be unable to do anything and it was said she looked scared. I would be horrified, too. That's something that would make me want to put people on a T-shirt, too.
I don't think Sonic is this immutable character who has one or two notable traits and no extrapolation. I feel like that sentiment gets tossed around and people don't exactly understand Sonic too much. Sonic is a rather dynamic character personality-wise and has displayed a wide array of relatable emotions. He isn't this unrelated, perfect being who never makes mistakes or lapses in his resolve or what have you. He doesn't need to have drastic character development for the Rage Form trope to work. It actually works with Sonic as he's had showings of being mad or annoyed at people or showing some negative emotions. My favorite part of Sonic X, actually, is Sonic having a cool edge to him. He isn't this infallible super hero. Sonic is brash, impatient, has a temperament, can be lazy, reckless, and follows his own rules. That's what makes Sonic cool. Not just the shonen tropes.