No not at all! You can find plenty of videos on YouTube of humans taking down 2015-era stockfish. Usually it involves exploiting specific weaknesses in the engine, for example bringing the game to a stalled position where the game nearly reaches the 50 move rule, and then the engine makes a disadvantaged move to avoid a draw.
Especially pre-NNUE, chess engines were often not fully well-rounded, and therefore a human with specific knowledge of the chess engine's weaknesses could take it down with enough attempts.
Taek|11 days ago
Especially pre-NNUE, chess engines were often not fully well-rounded, and therefore a human with specific knowledge of the chess engine's weaknesses could take it down with enough attempts.