The fact Sega sought out to create this film "strategy" to promote Sonic in an attempt to woo new fans and further his brand is proof positive Sega is out of touch. They have no clue what fans of Sonic want, enjoy, or find memorable about him. They don't even know what makes him appealing or how he can be appealing. That's not even including the litany of other questionable game decisions they've done with him. Sonic Forces, anyone?
And have Sega had an actual bad design for Sonic?
Well. Let's not forget what almost dethroned Sonic 2006 as the worst Sonic game ever made.
Sonic Boom, Rise of Lyric.
Boom Sonic (also known as Toon Sonic) along with the rest of the new cast designs were heavily criticized, along with their buggy, crappy games. It was another needless reboot that served no purpose at all except to just re-do Sonic for some needless, marketing, corporate strategy that just blows up in their face as usual. What's hilarious about that game series was that the actual ideas Big Red Button wanted to incorporate would have actually been cool, but they were stripped away at the last minute and Sega forced them to dumb down all the gameplay elements and shoehorn a bunch of garbage and redesigns that made the game the shit show it's known as. Ironically, the cartoon wasn't a disaster as the game and had its good points, but the negative publicity pretty much tarnished the brand from the jump.
Boom Sonic coexisted with Modern Sonic, the depiction that's been his relatively stable appearance since Sonic Adventure since 1998, until Sega just ignored him after his last game for the 3DS. And Modern Sonic was just the de-facto Sonic, with Classic Sonic being another version of him that was featured in games that were a callback to his appearance from the Genesis era. Modern Sonic is how he appears in Smash. How he appears in everything else. No one has any problem identifying Modern Sonic, or relating to his "brand personality" except in the imaginations of the marketing suits who are paid to come up with bullshit to sell to people in order to make a check.
Notice how Mario doesn't have to go through weird, reimaginings and "brand personality" tweaks and he's just able to exist, as is. Thanks to his memorability and creative input from game designers and creators. His identity is stable and consistent.
Same with Mickey Mouse. Pikachu. And most well done mascot and characters.
Sonic is the only one who is absurdly varied, thanks to Sega just not being able to get their shit together and pick a formula for Sonic that works. They don't know who they're marketing to or what their fanbase even is with him. Giving Sonic Mania's development to Whitehead was about the smartest thing Sonic Team ever did in 15 years. They probably need to do it more often.