Firesysok
I agree the approach, flare and touch down on the 777 should be done with one hand on the thrust lever and one on the control column. The nose is only raised 2 degrees or so in the flare.
However a goaround is normally performed with 2 hands on the control column after the TOGA switch has been pushed as the nose needs to be raised 15 degrees or so. I would like to bet that on the Emirates that there was a quick push of the TOGA followed by a 2 handed rotation. Good airmanship would dictate that the non handling pilot should follow through on the thrust levers to make sure they go forward as was done by a flight engineer in the old days.
Unfortunately if ATC shout a command at the second the goaround is initiated and the co-pilot is looking for a positive climb (which he saw) and FMA indications of Thrust TOGA TOGA and raising the gear in response to the call of gear up and trying to acknowledge the ATC instruction he may not have had his eyes where they should have been. This is understandable when people are taught Pavlovian responses to FMAs rather than monitoring the basics, ie a goaround or rejected landing needs 2 key ingredients, pitch and power. The latter was omitted by both pilots until shortly before ground impact.