Yes, the comment was changed considerably. Originally it gave Leonardo Da Vinci's attempts to create a perpetual motion machine as an example of a smart and successful person falling for a dumb idea.

Even in the source it says he was against such ideas.

> Leonardo da Vinci made a number of drawings of devices he hoped would make free energy. Leonardo da Vinci was generally against such devices, but drew and examined numerous overbalanced wheels

Just drawing some stuff that looks like perpetual machine isn't the same as actually believing in it. In fact this is how science should work. Even if something has a small chance to be correct try that and think about it. Einstein didn't believed in black holes but thought about breakdown of his equations.

That source wasn't there in the first version.