VA and watts the same at a PF of 1, which is what it's rated for, not 0.1.
For linear loads like resistive heaters and such, Watts and VA are the same. Only when using shitty switching power supplies and lots of crappy low PF light bulbs will you see a big difference, though induction motors aren't so hot sometimes either and could use some more capacitance in parallel to reduce the VA. Simple enough, just monitor V and A and add caps to minimize the total V times A. It's very worthwhile to reduce often run motor VA for inverters- they do draw real PV or battery power to generate every VA, real or reactive. I've confirmed that with a design engineer at Magnum and also myself on my own inverter design. For motor generators, bad PF loads only cost you 15% more in fuel, but mostly it just eats your total capacity and motor starting capacity.