Maybe not in an A318 - I can't see his PFD clearly enough to see what the speed and speed trend is - but in an A330; if the speed reduces to more than a few knots below Vapp bug on short finals and you do nothing, you can get sink and a heavy arrival.
Phase advance is no longer a thing with Airbus, but their advice to pilots to take manual control if the automatics are not doing what you need, still holds.
Disconnecting the A/THR by pushing out of the CLB gate below 100', as this guy does, is one way of switching to manual thrust control.
I've needed it a couple of times.
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Last edited by Uplinker; 2nd May 2020 at 09:14.
Reason: clarification