I doubt they meant it as being inflammatory. It's just a fact, if you don't read it as being perfectly literal. I parboil my rice and pour off the water before cooking it to try and avoid arsenic exposure (which is more or less a washing procedure). This also gives it a nice fluffy texture, but if asked why I do this, I would say something similar to GP.
"Rice has a lot of arsenic" reads the same as "rice may have arsenic in it — potentially high levels" if you don't take it as literally applying to all rice in all circumstances.
