I thought I would check out your comment against other opinions: " Mozart’s contact with the mastery of the German contrapuntal tradition opened a completely new musical horizon. He produced a number of stand-alone fugues, and this newly gained compositional skill helped to inform the creation of his final sublime orchestral masterpieces. Words simply can’t describe the jaw-dropping and breathtaking fugal display of quintuple invertible counterpoint in the final movement of the “Jupiter.”

We should all listen to the Jupiter and decide for ourselves if 'Mozart was never able to'.

https://interlude.hk/fugues-and-other-musical-charms-from-ba...