Indeed, the forces will ultimately go straight back. Cleverly, this design does some things that spread out the impluse.
In recoil, there really isn’t that much energy transferred - thing is, it’s that it’s all transferred really fast. Anything that extends the time of that transfer dramatically reduces perceived recoil. Comparison: a candle releases the same amount of energy as a stick of TNT - it just does it really slowly.
Good analogy with the candle & stick of dynamite. Furthermore, I would bet that candles (the dreaded open flame) have caused far more damage to structures than has dynamite.
I would hazard a guess that holding this gun in one hand with arm extended while NOT shooting is more difficult than doing so with another equally sized weapon. The reason is this gun has most of it’s mass INFRONT of your hand. A MAC 10 for instance has your hand around the magazine and the main recoiling mass is above your wrist.
That idiocy about turning the force 90 degrees to a downward direction is just that...IDIOCY.