Benidorm Lessons: Exchanging Queens

IN round two the following position was reached after 20 moves.

How should White continue?

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I played 21.Qxf8?!, after which Black is positionally winning, according to Stockfish16, although Komodo14.1 gives White 'only' the upper hand.

Probably I should have played 21.Qh5, when Black is still better, but White has counterplay thanks to the somewhat exposed position of the black king.

LESSON: the side with the safer king should keep queens on the board, unless there is a concrete reason to avoid doing so.