Why is the Queen sacrifice the best move?

I was doing puzzles, and this came up, I don't seem to understand why this was the best move. Can someone explain?

https://ibb.co/rMB31J8

This is the game
Move 16

The answer lies hidden slightly further into the game.
Black wins an exchange in the next three moves.

It's strange, stockfish suggests it, but it gives black a greater advantage if you play it.
I's say you exchange a queen for two pieces instead of losing a piece and giving your opponent a strong attack, but still it's not worth it.

@Nihongo-san but isn't it better to give a rook instead of queen for two pieces? He could even move Qf2 and avoid that rook trade.

I might be saying nonesense, but I like to understand to learn sorry :D

@Netteal White has to choose if he wants to lose a rook against a piece or a queen for two pieces. Doing the math should imply that the first 'trade' is better. But like pretty much everything in chess depends on the position. We humans aren't computers after all. ;)

In conclusion: White loses material and he decides how much.

@Netteal
Yep. White could have also trapped the dark-squared bishop of black, but still both the points lost and the position seem much better for black not sacrificing his queen.
It seems to me it's one of the very rare stockfish mistakes, in fact it's not even coherent with the score it gives to the positions after both possible moves

White queen is attacked and has no good squares to go. It's strategically a lost position, so computer decided it's better to exchange queen for 2 pieces to reduce bigger material loss.

Yeah, you're right, if you did stockfish's move, nothing much would've changed.