There was a mission in Mafia where you had to carry boxes to a truck, it was annoying enough doing it once. This is supposed to be futuristic, haven't they got conveyers, fork lifts and cranes?
They will be. A Hull E cannot be loaded by hand, it had more than 500 containers. Even if they change its structure, containers will be counted by hundred so manually charging will not be an option.
We don't know how CIG will handle the loading. It will depend of what they can achieve in their prototype. The simplest solution would be to hide the loading in a closed dock but it can't be with the actual infos we have. Hull cannot land or lift off when full so they must be loaded in space. And they are too big to enter the actual space stations. So the loading will be visible. A simple one can be big drones getting containers in dock and attaching them to the Hull in space. The Hull need also to be docked to the station and the docking engine is not here yet. Another problem CIG had tell us is that the grid engine has to be adapted to handle the Hull folding mechanism. It doesn't work well in their prototype atm. So we will not see them in game for a long time (as usually with CIG).
do something else like play another game that doesn't punish the player?
Waiting time are absolutely not bad in gameplay mechanics if well done, they are even a big element of a good reward mechanism. Only waiting time with nothing else to do is bad.
The big problem of "wasted" times in gameplay loops is that the AAA industry had rip all games of them, players are no longer accustomed to them. Not because they are bad but because the average customer doesn't have time to play. The gaming session must fit the shorter time possible, so no wait time, magical teleport to destination, shops at the spawn point... Everything that prevents the customer to have fun in 1 minute must disappear because the game will loose every customer that only have 15 minute gameplay session.
CIG had stated they will not adapt the game to those players, the waiting mechanisms will be in game. And they don't have an investor who will force them to cut back on the waiting's mechanics.
Side note : if you absolutely want to spend 100% of your time trading In SC you can do some manual trade with your small ship while waiting for your big ship loading.