where does it say he is two weeks out? So what if he has burnt tips and green leaves... I can show you as many articles against flushing as You can for Flushing so lets not start splitting hairs here..... I know you wana put the guy down for his personal belief but cmon man.
I don't see what you mean about splitting hairs, no-one wants salts and other crap in their smokeables. Plants do retain salts and salts do accumulate in the medium; flushing with pH balanced water dilutes these salts and lowers the overall ppm count within the medium. The plant will continue it's normal uptake but the solution is so diluted that deficiencies will occur. In turn, the plant draws nutrients from fan leaves and distributes them as needed. This process will eventually lower nutrient content within the plant material itself and create better tasting, smoother smoke.
Any plants that have been fed chemical nutes needs to be properly flushed, that is fact, I don't see how anyone can dispute that.
Best piece of advice I ever got from an old-timer was 'flush em till the fans fall off' and he was right, it gives you better taste and a smoother, cleaner smoke.
Consider this, people like Digitalhippy, growing with dozens of different bottles could be causing all kinds of nasty diseases in the people smoking their product that will not show up for decades yet. I mean, who knows the actual effects of smoking buds contaminated by residual materials from all that crap he is putting in his res? What if it turns out in 20 years that some of the crap AN were telling people would make them 'Grandmaster Growers' was actually carcinogenic? Who will those people be able to sue?