Why are so many people calling this a "whodunnit"?

Rating: 2/10 (12 April 2020)

This is NOT a mystery. It's certainly not a comedy. It's an extremely long, unnecessarily drawn-out, boring drama. Not one likeable or interesting character in the whole bunch, and a lot of good actors wasted. We are shown early on exactly who is to blame and what happened, and all the rest is just Daniel Craig hamming it up with an annoying accent.
How is it that so many reviewers are calling this garbage a mystery or a whodunnit, when it is clearly neither? Have any of them actually seen this movie?
I'm just sorry I wasted over 2 hours of my life watching this crap.