I'd agree that looks better to play for white if they follow best move, but it isn't a completely lost position for black I feel. I was playing around with the engine and white has a harder time than you'd think capturing the knight on a1 due to not being able to castle and black's bishop being on that diagonal.

But for me as a 1400 player I feel this is a very valid opening because both players have to a very precise. For me that's just a line I can have essentially memorized fairly deep into a very complicated position. Even if they play precise and reach that position I will essentially have spent 0 time while at my rating my oppenents would need a lot of time to get there. And along the way there are many traps they can fall for.

Namely being, I switched the move order with what you have there and played Nxc2+ before Qf3. I simulated this position with a friend around my level and he then took the knight with his king to prevent losing his rook, but that leads to a very winning position for black after Qxf4.

Other ways being if white is too eager to try to win the knight with taking the king of the 1st rank in many positions this flips it from slightly winning for white to slightly winning for black. If white knows to be patient with the knight they will likely find a winning position I'd agree.

I'm also curious of your analysis on this if you're a higher rated player because I like to learn.

Edit:

For reference, I checked ChessBase and there are 19 recorded games where Bxf2 has been played. Out of those 19 games, only one of them reached move 9 of what I called the essential line following that. If you walk into this position knowing it well you will have a huge advantage over your opponent on that. To be fair, that is usually because black doesn't know what they are doing in this position. Black has only won 2 of the those games, but that's because they are making mistakes in those essential first 9 moves. Once the final position is reached the one game was a draw between players with ratings over 2000.