Why is 8.Be3 a blunder for White after Ruy Lopez Opening: Morphy

Exactly as the topic states. This Stockfish

Chess Opening Mistakes in the Ruy Lopez [TRAPS Included]

lichess.org – Campfire Chess

Why does Stockfish prefer an exchange variation here? it even says ba4 is a blunder. am i missing something? : r/chess

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Chess openings: Ruy Lopez, Closed (C84)

ANTI The Anti-Marshall System! - Jonas Buhl Bjerre vs Daniil Dubov - Ruy Lopez, Morphy Defense

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Every variation of the Ruy Lopez : r/chess

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Why is 8.Be3 a blunder for White after Ruy Lopez Opening: Morphy Defense, Exchange, Lutikov Variatio - Chess Forums

What Was I Thinking? - Online Chess Coaching