How is this a 2000 rated puzzle?
This is not about rating a puzzle, it is about the outrageous move Qf5+. Did you make that up? Or did you get the diagram wrong?

I am a 2000 puzzle player and although most of the puzzles are difficult we occasionally get the easiest mate in ones or free queens, maybe chess.com thinks that we will overthink it???

I think chess.com thinks you will rush and take with the queen and get taken by the rook, still should be a 600 puzzle

maybe it was a typo and it was supposed to be a 200 rated puzzle.
Apparently, almost 40% of solvers fail it. How? Why? Nobody knows.
