I have been lifting the fish from the water in the net since the 1980's. Either by sliding the handle back until I can grip and lift the arms, or by popping the net out of the spreader block.
Ali Hamidi winds me up with his open mouth before brain is in ignition, and this is another one, although he has gotten part right, and that is the fish must be at the bottom of the net, and the lead clip, hook eye must be clear of the mesh. It is why fine mesh was invented, so tackle and fins don't get caught in it!
In fact, watch him on his programmes, The Big Fish etc, and guess what he does, lifts it out of the water in the net. Or even Monster Carp, The German. I am sure that fish was netted, lifted out then unsprung before being put back in the water and towed to the bank.
Add to that, if anglers did what he is suggesting, we would find a large number of fish escaping the scales altogether...