Why can't classic Sonic speak?

Singing with Sonic 'n Friends Classic sonic, Sonic nintendo, Sonic

Review: Sonic Generations – Destructoid

CodenameGamma🏳️‍⚧️ on X: @sonic_hedgehog Classic Sonic is Speechless. / X

Multiple Classic Sonic Games Are Being Delisted On Xbox Soon

Interview: How Sonic Superstars was born from a Zoom drinking party

Sega Is Delisting Classic Sonic Games From Digital Stores Ahead Of Sonic Origins' Launch - Game Informer

How come Younger Sonic can't talk? : r/SonicTheHedgehog

Sonic the Hedgehog 2 Review: Blue Is the New Bland

Sonic The Hedgehog 4 Sonic Action Figure : Everything Else

Sonic Frontiers: You 'Can't Even Scratch' Some Bosses Until You Unlock Super Sonic - IGN

I like to tell you secret Sonic the hedgehog, Classic sonic, Sonic

Who would win in a battle royale between Classic Sonic, Modern Sonic, Adventure Sonic, Boom Sonic, Movie Sonic, Sanic, and Andronic? - Quora