The first line is reference to ‘who’ said ‘what’ first.

Was I the first person to say something everyone heard for the first time?

If so, was the individual who re-pronounced my statement, years later,
made a fool of and called a plagiarist of another’s great thoughts?

The second person may have been speaking the words with a genuine love and admiration for the original artist.

Bitter contrarians would argue the second speaker is really a fool.