Well nobody runs a 1200W PSU @ 1200W of load. 30A is good for 5760W (after 20% derate). 30A PDU are dirt cheap if you are willing to buy used. Datacenters go through tens of thousands of these so there is never ending supply.
You might be surprised what DIY mining pushes users into. 5760W equals less than 4 x 1500w at the wall .. so you'll use only 3 outlets at max from the strip leaving about 1.2kW spare.. With all those C13 outlets available on the PDU one may think they're good to draw more, when in fact they should be taped out. With 20A circuits to have less spare (about 840W).
Anyway, all setups are good as long as the end user monitors the currents and size their stuff so that they don't burn their house down. I like the 240V setups because they load the two 180 degree phases equally and you don't lose much having an unbalanced system.